Remove legacy build system

StandAlone/Makefile

@@ -1,32 +0,0 @@
-SRCS := StandAlone.cpp
-OBJECTS := $(SRCS:.cpp=.o)
-DEPS := $(addprefix ., $(SRCS:.cpp=.d))
-
-OBJECTPATH=./../glslang/MachineIndependent
-LIBPATH=./../glslang/MachineIndependent/lib
-SRCS=StandAlone.cpp
-
-CXXFLAGS += -fPIC -I../glslang/OSDependent/Linux
-
-all: glslangValidator
-
-glslangValidator: $(OBJECTS) regenlib
-	$(CC) -g -o $@ $(OBJECTS) -L $(LIBPATH) -lglslang -lpthread -lm -lstdc++
-	cp $@ ../Test
-	cp $@ ../Install/Linux
-
--include $(DEPS)
-
-%.o : %.cpp
-	$(CXX) $(CXXFLAGS) -MMD -MP -MF $(addprefix ., $(<:.cpp=.d)) -c -o $@ $<
-
-regenlib:
-	$(MAKE) -C $(OBJECTPATH)
-
-#
-# Cleanup
-#
-.PHONY : clean glslangValidator regenlib
-clean :
-	$(RM) *.o glslangValidator ../Install/Linux/glslangValidator
-	$(MAKE) -C $(OBJECTPATH) clean