remove -Wno-dev

Author: sdcb

.github/workflows/opencv.yml

@@ -161,7 +161,6 @@ jobs:
             EXTRA_FLAGS+=" -DANDROID_STL=c++_static"
             EXTRA_FLAGS+=" -DBUILD_ANDROID_EXAMPLES=OFF"
             EXTRA_FLAGS+=" -DBUILD_ANDROID_PROJECTS=OFF"
-            EXTRA_FLAGS+=" -Wno-dev"
           
             if [[ "${{ matrix.arch }}" == "arm64" ]]; then
               EXTRA_FLAGS+=" -DANDROID_ABI=arm64-v8a"