chore: remove compile protos from post processor (#732)

* chore: remove compile protos from post processor

Source-Link: googleapis/synthtool@7324804
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:bfe4592953269bfa8d135200ca1b17809f106a337a885d7ecc12cd2a9998e98a

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: meredithslota <meredithslota@google.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:e92044720ab3cb6984a70b0c6001081204375959ba3599ef6c42dd99a7783a67
-# created: 2023-11-10T00:24:05.581078808Z
+  digest: sha256:bfe4592953269bfa8d135200ca1b17809f106a337a885d7ecc12cd2a9998e98a
+# created: 2023-11-15T20:00:24.246072277Z