msbuild: use default Project attrs

maybe it makes the xml less scary :D

Source/VSProps/Base.Macros.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup Label="UserMacros">
     <DolphinRelease Condition="'$(DolphinRelease)'!='true' or '$(Configuration)'!='Release'">false</DolphinRelease>
     <TargetSuffix></TargetSuffix>

Source/VSProps/Base.Targets.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|ARM64">
       <Configuration>Debug</Configuration>

Source/VSProps/Base.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="Base.Macros.props" Condition="'$(BaseMacrosImported)'==''" />
   <PropertyGroup>
     <IntDir>$(BuildRootDir)$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>

Source/VSProps/ClDisableAllWarnings.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ImportGroup Label="PropertySheets" />
   <PropertyGroup Label="UserMacros" />
   <ItemDefinitionGroup>

Source/VSProps/Configuration.Application.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="Configuration.Base.props" />
   <PropertyGroup Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>

Source/VSProps/Configuration.Base.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup Label="Configuration">
     <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>

Source/VSProps/Configuration.StaticLibrary.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="Configuration.Base.props" />
   <PropertyGroup Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>

Source/VSProps/Configuration.Utility.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="Configuration.Base.props" />
   <PropertyGroup Label="Configuration">
     <ConfigurationType>Utility</ConfigurationType>

Source/VSProps/PCHCommon.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ImportGroup Label="PropertySheets" />
   <PropertyGroup Label="UserMacros" />
   <ItemDefinitionGroup>

Source/VSProps/PCHCreate.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ImportGroup Label="PropertySheets">
     <Import Project="PCHCommon.props" />
   </ImportGroup>

Source/VSProps/PCHUse.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ImportGroup Label="PropertySheets">
     <Import Project="Base.Macros.props" Condition="'$(BaseMacrosImported)'==''" />
     <Import Project="PCHCommon.props" />

Source/VSProps/QtCompile.props

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup Label="UserMacros">
     <QTDIRDefault Condition="'$(Platform)'=='x64'">$(ExternalsDir)Qt\Qt5.15.0\msvc2019_64\</QTDIRDefault>
     <QTDIRDefault Condition="'$(Platform)'=='ARM64'">$(ExternalsDir)Qt\Qt5.15.0\msvc2019_arm64\</QTDIRDefault>

Source/VSProps/qt_globals.targets

@@ -34,7 +34,7 @@
 /// Qt/MSBuild global definitions
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
 
   <!--
   /////////////////////////////////////////////////////////////////////////////////////////////////

Source/VSProps/qt_tasks.targets

@@ -33,7 +33,7 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // Helper inline tasks used by the Qt/MSBuild targets
 // -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
 
   <!--
   /////////////////////////////////////////////////////////////////////////////////////////////////

Source/VSProps/qtmoc.props

@@ -32,7 +32,7 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // Qt/MSBuild moc property definitions
 // -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <!--
   /////////////////////////////////////////////////////////////////////////////////////////////////
   // Import pre-requisites

Source/VSProps/qtmoc.targets

@@ -34,7 +34,7 @@
 // Definitions specific to moc
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <!--
   /////////////////////////////////////////////////////////////////////////////////////////////////
   // Import pre-requisites

Source/VSProps/qtmoc_cl.targets

@@ -28,7 +28,7 @@
     **
     *****************************************************************************
 -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Target Name="QtMocOverrideCpp" DependsOnTargets="QtMocPrepare;QtGetDefaultClCompile"
     Inputs="%(QtMoc.Identity)" Outputs="@(QtMoc->'####### Don't skip this target #######')">