[common] remove nvidia driver hack using environment variables (#2575)

Ugly hack that helped boost FPS on OpenGL backend... or does it? https://download.nvidia.com/XFree86/Linux-x86_64/435.17/README/openglenvvariables.html
This shouldn't work on Windows properly, as it is meant to be a Linux only thing anyways... so?

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2575
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

src/yuzu_cmd/yuzu.cpp

@@ -16,7 +16,6 @@
 #include "common/detached_tasks.h"
 #include "common/logging/backend.h"
 #include "common/logging/log.h"
-#include "common/nvidia_flags.h"
 #include "common/scm_rev.h"
 #include "common/scope_exit.h"
 #include "common/settings.h"
@@ -334,8 +333,6 @@ int main(int argc, char** argv) {
     LocalFree(argv_w);
 #endif
 
-    Common::ConfigureNvidiaEnvironmentFlags();
-
     if (filepath.empty()) {
         LOG_CRITICAL(Frontend, "Failed to load ROM: No ROM specified");
         return -1;