Don't build for ios armv7s

armv7s seems to be legacy.

(cherry picked from commit 25b0e27)

Author: Exanite

sources/SDL/Native/build-ios.sh

@@ -7,7 +7,7 @@ fi
 rm -rf build
 mkdir build
 cd build
-cmake ../../../../eng/submodules/sdl -DCMAKE_SYSTEM_NAME=iOS -DCMAKE_OSX_SYSROOT=iphoneos "-DCMAKE_OSX_ARCHITECTURES=arm64;armv7s" -DCMAKE_OSX_DEPLOYMENT_TARGET=9.0 -DCMAKE_BUILD_TYPE=Release -DSDL_STATIC=ON -DSDL_TEST_LIBRARY=OFF
+cmake ../../../../eng/submodules/sdl -DCMAKE_SYSTEM_NAME=iOS -DCMAKE_OSX_SYSROOT=iphoneos "-DCMAKE_OSX_ARCHITECTURES=arm64" -DCMAKE_OSX_DEPLOYMENT_TARGET=9.0 -DCMAKE_BUILD_TYPE=Release -DSDL_STATIC=ON -DSDL_TEST_LIBRARY=OFF
 cmake --build . --parallel
 cd ..
 mkdir -p runtimes/ios/native