Remove build systems other than CMake

Make it clear that CMake is the only supported build system.

Signed-off-by: Kevin Petit <kevin.petit@arm.com>

test_conformance/half/Jamfile

@@ -1,22 +0,0 @@
-project
-    : requirements
-      -<library>/harness//harness <use>/harness//harness
-#      <toolset>gcc:<cflags>-xc++
-      <toolset>msvc:<cflags>"/TP"
-    ;
-
-exe Test_half
-    : cl_utils.c
-      main.c
-      Test_roundTrip.c
-      Test_vLoadHalf.c
-      Test_vStoreHalf.c
-      /harness//errorHelpers.c
-    : <target-os>windows:<source>/harness//msvc9.c
-    ;
-
-install dist
-    : Test_half
-    : <variant>debug:<location>$(DIST)/debug/tests/test_conformance/half
-      <variant>release:<location>$(DIST)/release/tests/test_conformance/half
-    ;

test_conformance/half/Makefile

@@ -1,45 +0,0 @@
-ifdef BUILD_WITH_ATF
-ATF = -framework ATF
-USE_ATF = -DUSE_ATF
-endif
-
-SRCFILES = cl_utils.c Test_vLoadHalf.c Test_roundTrip.c \
-           Test_vStoreHalf.c main.c
-
-CC = cc
-CFLAGS = -g -Wall -Wshorten-64-to-32 $(COMPILERFLAGS) ${RC_CFLAGS} \
-         ${USE_ATF}
-
-LIBRARIES = -framework OpenCL ${RC_CFLAGS} ${ATF}
-
-
-all: release
-
-OBJECTS := ${SRCFILES:.c=.o}
-
-release:
-	echo "Build Release"
-	$(CC) $(SRCFILES) -Os $(CFLAGS) -o Test_half $(LIBRARIES)
-
-debug: $(OBJECTS)
-	echo "Build Debug"
-	$(CC) $(OBJECTS) -O0 $(CFLAGS) -o Test_half_debug -D_DEBUG=1 $(LIBRARIES)
-
-test:	release
-	arch -i386 ./Test_half -c > cpu.log	&
-	arch -i386 ./Test_half -g > gpu.log	&
-	echo "Testing 32-bit mode in progress. See cpu.log and gpu.log for results."
-
-test64:	release
-	arch -x86_64 ./Test_half -c > cpu64.log	&
-	arch -x86_64 ./Test_half -g > gpu64.log	&
-	echo "Testing 64-bit mode in progress. See cpu64.log and gpu64.log for results."
-
-
-clean:
-	rm -f ./Test_half_debug
-	rm -f ./Test_half
-
-
-.DEFAULT:
-	@echo The target \"$@\" does not exist in Makefile.