sqlglotc: drop a stray publish input added by mistake

Author: luhenry

.github/workflows/build-sqlglotc.yml

@@ -125,4 +125,3 @@ jobs:
       app-private-key: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
     with:
       artifact-pattern: sqlglotc-${{ matrix.version }}-*-manylinux_riscv64
-      gpl-sources-artifact: ''