Remove line-continuation backslash in makefile

Makefile

@@ -68,7 +68,7 @@ INCLUDEPATH:= $(addprefix $(SOURCEDIR)/, Common/Include Math CNTK ActionsLib Com
 # COMMON_FLAGS include settings that are passed both to NVCC and C++ compilers.
 COMMON_FLAGS:= -D_POSIX_SOURCE -D_XOPEN_SOURCE=600 -D__USE_XOPEN2K -std=c++11
 CPPFLAGS:= 
-CXXFLAGS:= -msse3 -mavx -std=c++0x -fopenmp -fpermissive -fPIC -Werror -fcheck-new
+CXXFLAGS:= -msse3 -std=c++0x -fopenmp -fpermissive -fPIC -Werror -fcheck-new
 LIBPATH:=
 LIBS:=
 LDFLAGS:=
@@ -290,7 +290,7 @@ MATH_SRC =\
 
 ifdef SUPPORT_AVX2
 MATH_SRC +=\
-	$(SOURCEDIR)/Math/BlockHandlerAVX.cpp \
+	$(SOURCEDIR)/Math/BlockHandlerAVX.cpp
 endif
 
 ifdef CUDA_PATH