Fix release job in build.yml

Author: afinetooth

.github/workflows/build.yml

@@ -220,7 +220,6 @@ jobs:
           mkdir release/
           find artifacts/ -type f -exec cp \{} release/ \;
           cd release/
-          mv coveralls coveralls-linux
           mv coveralls.exe coveralls-windows.exe
           sha256sum * > coveralls-checksums.txt