Remove unnecessary patches

windows_fix_towupper has been merged inside webrtc-sdk
It is not needed anymore

Author: theomonnom

build/patches/windows_fix_towupper.patch

@@ -181,14 +181,12 @@ def get_depot_tools(source_dir, fetch=False):
         'add_license_dav1d.patch',
         'windows_add_deps.patch',
         'windows_silence_warnings.patch',
-        'windows_fix_towupper.patch',
         'fix_mocks.patch',
     ],
     'windows_arm64': [
         'add_license_dav1d.patch',
         'windows_add_deps.patch',
         'windows_silence_warnings.patch',
-        'windows_fix_towupper.patch',
         'fix_mocks.patch',
     ],
     'macos_x86_64': [