Remove HIDAPI Autotools build system and unused files

Externals/hidapi/linux/.gitignore

@@ -1,18 +0,0 @@
-Debug
-Release
-*.exp
-*.ilk
-*.lib
-*.suo
-*.vcproj.*
-*.ncb
-*.suo
-*.dll
-*.pdb
-*.o
-*.so
-hidtest-hidraw
-.deps
-.libs
-*.lo
-*.la

Externals/hidapi/linux/Makefile-manual

@@ -1,49 +0,0 @@
-###########################################
-# Simple Makefile for HIDAPI test program
-#
-# Alan Ott
-# Signal 11 Software
-# 2010-06-01
-###########################################
-
-all: hidtest-hidraw libs
-
-libs: libhidapi-hidraw.so
-
-CC       ?= gcc
-CFLAGS   ?= -Wall -g -fpic
-
-CXX      ?= g++
-CXXFLAGS ?= -Wall -g -fpic
-
-LDFLAGS  ?= -Wall -g
-
-
-COBJS     = hid.o
-CPPOBJS   = ../hidtest/hidtest.o
-OBJS      = $(COBJS) $(CPPOBJS)
-LIBS_UDEV = `pkg-config libudev --libs` -lrt
-LIBS      = $(LIBS_UDEV)
-INCLUDES ?= -I../hidapi `pkg-config libusb-1.0 --cflags`
-
-
-# Console Test Program
-hidtest-hidraw: $(COBJS) $(CPPOBJS)
-	$(CXX) $(LDFLAGS) $^ $(LIBS_UDEV) -o $@
-
-# Shared Libs
-libhidapi-hidraw.so: $(COBJS)
-	$(CC) $(LDFLAGS) $(LIBS_UDEV) -shared -fpic -Wl,-soname,$@.0 $^ -o $@
-
-# Objects
-$(COBJS): %.o: %.c
-	$(CC) $(CFLAGS) -c $(INCLUDES) $< -o $@
-
-$(CPPOBJS): %.o: %.cpp
-	$(CXX) $(CXXFLAGS) -c $(INCLUDES) $< -o $@
-
-
-clean:
-	rm -f $(OBJS) hidtest-hidraw libhidapi-hidraw.so ../hidtest/hidtest.o
-
-.PHONY: clean libs

Externals/hidapi/linux/Makefile.am

@@ -1,10 +0,0 @@
-lib_LTLIBRARIES = libhidapi-hidraw.la
-libhidapi_hidraw_la_SOURCES = hid.c
-libhidapi_hidraw_la_LDFLAGS = $(LTLDFLAGS)
-AM_CPPFLAGS = -I$(top_srcdir)/hidapi/ $(CFLAGS_HIDRAW)
-libhidapi_hidraw_la_LIBADD = $(LIBS_HIDRAW)
-
-hdrdir = $(includedir)/hidapi
-hdr_HEADERS = $(top_srcdir)/hidapi/hidapi.h
-
-EXTRA_DIST = Makefile-manual