Disable EGL in Emscripten builds

src/video/SDL_egl.c

@@ -258,7 +258,7 @@ SDL_FunctionPointer SDL_EGL_GetProcAddressInternal(SDL_VideoDevice *_this, const
             result = _this->egl_data->eglGetProcAddress(proc);
         }
 
-#if !defined(SDL_PLATFORM_EMSCRIPTEN) && !defined(SDL_VIDEO_DRIVER_VITA) // LoadFunction isn't needed on Emscripten and will call dlsym(), causing other problems.
+#if !defined(SDL_VIDEO_DRIVER_VITA)
         // Try SDL_LoadFunction() first for EGL <= 1.4, or as a fallback for >= 1.5.
         if (!result) {
             result = SDL_LoadFunction(_this->egl_data->opengl_dll_handle, proc);