CommonFuncs: Remove SLEEP macro

There's already a function in Thread for this.

Source/Core/Core/HW/EXI_DeviceGecko.cpp

@@ -74,7 +74,8 @@ void GeckoSockServer::GeckoConnectionWaiter()
 
 			new_client = std::make_unique<sf::TcpSocket>();
 		}
-		SLEEP(1);
+
+		Common::SleepCurrentThread(1);
 	}
 }
 

Source/Core/Core/HW/WiimoteReal/IOWin.cpp

@@ -17,6 +17,7 @@
 
 #include "Common/Common.h"
 #include "Common/StringUtil.h"
+#include "Common/Thread.h"
 
 #include "Core/HW/WiimoteReal/WiimoteReal.h"
 
@@ -250,7 +251,7 @@ void WiimoteScanner::Update()
 	// Some hacks that allows disconnects to be detected before connections are handled
 	// workaround for Wiimote 1 moving to slot 2 on temporary disconnect
 	if (forgot_some)
-		SLEEP(100);
+		Common::SleepCurrentThread(100);
 }
 
 // Find and connect Wiimotes.
@@ -313,12 +314,8 @@ void WiimoteScanner::FindWiimotes(std::vector<Wiimote*> & found_wiimotes, Wiimot
 	}
 
 	SetupDiDestroyDeviceInfoList(device_info);
-
-	// Don't mind me, just a random sleep to fix stuff on Windows
-	//if (!wiimotes.empty())
-	//    SLEEP(2000);
-
 }
+
 int CheckDeviceType_Write(HANDLE &dev_handle, const u8* buf, size_t size, int attempts)
 {
 	OVERLAPPED hid_overlap_write = OVERLAPPED();

Source/Core/Core/HW/WiimoteReal/WiimoteReal.cpp

@@ -359,7 +359,7 @@ bool Wiimote::PrepareOnThread()
 
 	return (IOWrite(mode_report, sizeof(mode_report)) &&
 	        IOWrite(led_report, sizeof(led_report)) &&
-	        (SLEEP(200), IOWrite(rumble_report, sizeof(rumble_report))) &&
+	        (Common::SleepCurrentThread(200), IOWrite(rumble_report, sizeof(rumble_report))) &&
 	        IOWrite(req_status_report, sizeof(req_status_report)));
 }