COMP: Remove invalid Emscripten HDF5 link flags

Addresses:

FAILED: bin/H5detect.js
: && /emsdk_portable/emscripten/sdk/emcc -std=c99 -Wno-warn-absolute-paths --memory-init-file 0 -s WASM=0 -lnodefs.js -Wno-almost-asm  -Wno-uninitialized -Wno-unused-parameter -Wall -Wcast-align -Wdisabled-optimization -Wextra -Wformat=2 -Winvalid-pch -Wno-format-nonliteral -Wpointer-arith -Wshadow -Wunused -Wwrite-strings -funit-at-a-time -Wno-strict-overflow  -w -DNDEBUG -O2  -O2 Modules/ThirdParty/HDF5/src/itkhdf5/src/CMakeFiles/H5detect.dir/H5detect.c.o  -o bin/H5detect.js  -l"-O0" && :
shared:ERROR: emcc: cannot find library "-O0"
[1545/2207] Linking C executable bin/H5make_libsettings.js
FAILED: bin/H5make_libsettings.js
: && /emsdk_portable/emscripten/sdk/emcc -std=c99 -Wno-warn-absolute-paths --memory-init-file 0 -s WASM=0 -lnodefs.js -Wno-almost-asm  -Wno-uninitialized -Wno-unused-parameter -Wall -Wcast-align -Wdisabled-optimization -Wextra -Wformat=2 -Winvalid-pch -Wno-format-nonliteral -Wpointer-arith -Wshadow -Wunused -Wwrite-strings -funit-at-a-time -Wno-strict-overflow  -w -DNDEBUG -O2  -O2 Modules/ThirdParty/HDF5/src/itkhdf5/src/CMakeFiles/H5make_libsettings.dir/H5make_libsettings.c.o  -o bin/H5make_libsettings.js  -l"-O0" && :
shared:ERROR: emcc: cannot find library "-O0"

This flags are invalid, at least with newer Emscripten, and not required.

Modules/ThirdParty/HDF5/src/itkhdf5/src/CMakeLists.txt

@@ -952,7 +952,6 @@ if (NOT EXISTS "${HDF5_GENERATED_SOURCE_DIR}/H5Tinit.c")
   TARGET_C_PROPERTIES (H5detect STATIC)
   target_link_libraries (H5detect
       PRIVATE "$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_LIBRARIES}>" $<$<OR:$<PLATFORM_ID:Windows>,$<PLATFORM_ID:MinGW>>:ws2_32.lib>
-      PRIVATE $<$<PLATFORM_ID:Emscripten>:"-O0">
   )
 
   if (HDF5_BATCH_H5DETECT)
@@ -1043,7 +1042,6 @@ target_compile_definitions(H5make_libsettings PUBLIC ${HDF_EXTRA_C_FLAGS} ${HDF_
 TARGET_C_PROPERTIES (H5make_libsettings STATIC)
 target_link_libraries (H5make_libsettings
     PRIVATE "$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_LIBRARIES}>" $<$<OR:$<PLATFORM_ID:Windows>,$<PLATFORM_ID:MinGW>>:ws2_32.lib>
-    PRIVATE $<$<PLATFORM_ID:Emscripten>:"-O0">
 )
 
 add_custom_command (