Sign MSI if code signing is requested.

Remove SIGNCODE_ENABLED variable from create_msi.cmake.in,
it was already removed from other places.

win/packaging/create_msi.cmake.in

@@ -20,7 +20,6 @@ SET(CPACK_WIX_PACKAGE_BASE_NAME "@CPACK_WIX_PACKAGE_BASE_NAME@")
 SET(SIGNCODE "@SIGNCODE@")
 SET(SIGNTOOL_EXECUTABLE "@SIGNTOOL_EXECUTABLE@")
 SET(SIGNTOOL_PARAMETERS "@SIGNTOOL_PARAMETERS@")
-SET(SIGNCODE_ENABLED "@SIGNCODE_ENABLED@")
 SET(CMAKE_FULL_VER 
   "@CMAKE_MAJOR_VERSION@.@CMAKE_MINOR_VERSION@.@CMAKE_PATCH_VERSION@")
 SET(EXTRA_WIX_PREPROCESSOR_FLAGS  "@EXTRA_WIX_PREPROCESSOR_FLAGS@")
@@ -400,7 +399,7 @@ EXECUTE_PROCESS(
   ${EXTRA_LIGHT_ARGS}
 )
 
-IF(SIGNCODE AND SIGNCODE_ENABLED)
+IF(SIGNCODE)
   EXECUTE_PROCESS(
   COMMAND ${SIGNTOOL_EXECUTABLE} sign ${SIGNTOOL_PARAMETERS} 
   ${CPACK_PACKAGE_FILE_NAME}.msi