Remove deprecated demangle flag from emscripten

Author: bvschaik

CMakeLists.txt

@@ -714,7 +714,7 @@ endif()
 
 if(${TARGET_PLATFORM} STREQUAL "emscripten")
     set(CMAKE_EXECUTABLE_SUFFIX .html)
-    set_target_properties(${SHORT_NAME} PROPERTIES LINK_FLAGS "-lidbfs.js -s SINGLE_FILE=1 -s DEMANGLE_SUPPORT=1 -s DYNCALLS=1 --shell-file ${PROJECT_SOURCE_DIR}/res/shell.html -s INITIAL_MEMORY=268435456 -s ALLOW_MEMORY_GROWTH=1 -s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=0 -s SAFE_HEAP=1 -s INVOKE_RUN=0 -s 'EXPORTED_FUNCTIONS=[\"_main\"]' -s 'EXPORTED_RUNTIME_METHODS=[\"callMain\",\"FS\"]'  --bind")
+    set_target_properties(${SHORT_NAME} PROPERTIES LINK_FLAGS "-lidbfs.js -s SINGLE_FILE=1 -s DYNCALLS=1 --shell-file ${PROJECT_SOURCE_DIR}/res/shell.html -s INITIAL_MEMORY=268435456 -s ALLOW_MEMORY_GROWTH=1 -s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=0 -s SAFE_HEAP=1 -s INVOKE_RUN=0 -s 'EXPORTED_FUNCTIONS=[\"_main\"]' -s 'EXPORTED_RUNTIME_METHODS=[\"callMain\",\"FS\"]'  --bind")
 endif()
 
 if(MSVC)