shell: just define _WIN32_IE and drop the undef

Because the compiler warns either way.

cl : Command line warning D9025 : overriding ´/D_WIN32_IE=0x0500´ with
´/U_WIN32_IE´

After this change the message what's overwritten gets more
clear to the reader.

Change-Id: I773e7499537aff879f857b9b50ec8afc4005130b

shell/Library_ooofilt.mk

@@ -22,9 +22,7 @@ $(eval $(call gb_Library_add_defs,ooofilt,\
 	-D_UNICODE \
 ))
 $(eval $(call gb_Library_add_defs,ooofilt,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 	-UNOMINMAX \
 ))

shell/Library_ooofilt_x64.mk

@@ -29,9 +29,7 @@ $(eval $(call gb_Library_add_defs,ooofilt_x64,\
 	-UNOMINMAX \
 ))
 $(eval $(call gb_Library_add_defs,ooofilt_x64,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))
 

shell/Library_propertyhdl.mk

@@ -23,9 +23,7 @@ $(eval $(call gb_Library_add_defs,propertyhdl,\
 	-UNOMINMAX \
 ))
 $(eval $(call gb_Library_add_defs,propertyhdl,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))
 

shell/Library_propertyhdl_x64.mk

@@ -29,9 +29,7 @@ $(eval $(call gb_Library_add_defs,propertyhdl_x64,\
 	-UNOMINMAX \
 ))
 $(eval $(call gb_Library_add_defs,propertyhdl_x64,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))
 

shell/Library_shlxthdl.mk

@@ -23,9 +23,7 @@ $(eval $(call gb_Library_add_defs,shlxthdl,\
 	-UNOMINMAX \
 ))
 $(eval $(call gb_Library_add_defs,shlxthdl,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))
 

shell/Library_shlxthdl_x64.mk

@@ -29,9 +29,7 @@ $(eval $(call gb_Library_add_defs,shlxthdl_x64,\
 	-UNOMINMAX \
 ))
 $(eval $(call gb_Library_add_defs,shlxthdl_x64,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))
 

shell/StaticLibrary_shlxthandler_common.mk

@@ -22,9 +22,7 @@ $(eval $(call gb_StaticLibrary_add_defs,shlxthandler_common,\
 	-D_UNICODE \
 ))
 $(eval $(call gb_StaticLibrary_add_defs,shlxthandler_common,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))
 

shell/StaticLibrary_shlxthandler_common_x64.mk

@@ -28,9 +28,7 @@ $(eval $(call gb_StaticLibrary_add_defs,shlxthandler_common_x64,\
 	-D_UNICODE \
 ))
 $(eval $(call gb_StaticLibrary_add_defs,shlxthandler_common_x64,\
-	-U_WIN32_IE \
 	-D_WIN32_IE=0x501 \
-	-U_WIN32_WINNT \
 	-D_WIN32_WINNT=0x0501 \
 ))