remove use of sccache

Author: ParkMyCar

ci/test/pipeline.template.yml

@@ -15,7 +15,6 @@
 dag: true
 
 env:
-  CI_BUILDER_SCCACHE: 1
   CI_BAZEL_BUILD: 1
   CI_BAZEL_REMOTE_CACHE: "https://bazel-remote.dev.materialize.com"
   # Note: In .cargo/config we set the default build jobs to -1 so on developer machines we keep