Aperture: Don't pass `repository` unnecessarily

Change-Id: I5b25617e0e5d8cbc2efdd3a0543af6893705c125
diff --git a/.github/workflows/gerrit.yml b/.github/workflows/gerrit.yml
index 0f6ce69..6589c3b 100644
--- a/.github/workflows/gerrit.yml
+++ b/.github/workflows/gerrit.yml
@@ -16,7 +16,6 @@
     steps:
     - uses: lineageos-infra/fetch-gerrit-change@main
       with:
-        repository: ${{ github.repository }}
         gerrit-ref: ${{ inputs.gerrit-ref }}
         ref: ${{ inputs.ref }}