Simplify action.yml by removing PostGIS install steps

Removed PostGIS installation steps for macOS.

Author: thampton

action.yml

@@ -120,19 +120,7 @@ runs:
       if: runner.os == 'macOS'
       shell: bash
       run: |
-        PG_VERSION=${{ inputs.postgres-version }}
         brew install postgis
-        POSTGIS_CELLAR_PATH=$(brew --cellar postgis)
-        POSTGIS_VERSION=$(brew list --versions postgis | awk '{print $2}')
-        EXT_PATH=$(find "$POSTGIS_CELLAR_PATH/$POSTGIS_VERSION/share" -type d -name extension | head -n 1)
-        PG_EXT_PATH=$(brew --prefix postgresql@${PG_VERSION})/share/postgresql@${PG_VERSION}/extension
-
-        if [ -d "$EXT_PATH" ]; then
-          cp "$EXT_PATH"/* "$PG_EXT_PATH"/
-        else
-          echo "::error::PostGIS extension directory not found at $EXT_PATH"
-          exit 1
-        fi
         
     - name: Detect PostgreSQL Version (Windows)
       if: runner.os == 'Windows'