[cmake] drop invalid c98 warning suppression (#4269)

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The -Wno-c98-compat breaks clang build on windows.
I believe it's a typo, since i couldn't find about it elsewhere.
The -Wno-c99-compat is in place.
As a bonus removed a doubled -Wno-c99-extensions right after.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4269
Reviewed-by: Samuel <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

CMakeLists.txt

@@ -172,8 +172,6 @@ if (CXX_CLANG_CL)
         $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-c++98-compat-pedantic>
         $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-c++98-compat>
         $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-c99-compat>
-        $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-c98-compat>
-        $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-c99-extensions>
         $<$<COMPILE_LANGUAGE:C,CXX>:/EHsc>)
     # REQUIRED CPU features IN Windows-amd64
     if (ARCHITECTURE_x86_64)