Revert "[git-bridge] Cache maven artifacts in Dockerfile (#34390)" (#34399)

This reverts commit 1222ba62bc6242874d76e26c69b366fbde62f519.

GitOrigin-RevId: dc45e995b30ffc958a4ce62206d8f4dd7d41ca50

services/git-bridge/Dockerfile

@@ -16,17 +16,6 @@ RUN chmod +x /opt/envsubst
 
 RUN useradd --create-home node
 
-ENV MAVEN_OPTS="-Dmaven.repo.local=/app/.m2/repository"
-
-# pre-resolve Maven dependencies and plugins into the base image to limit
-# downstream `mvn` invocations hitting Maven Central on every CI build.
-COPY pom.xml /tmp/pom.xml
-RUN mvn -B --no-transfer-progress -f /tmp/pom.xml \
-      dependency:go-offline \
-      dependency:resolve-plugins \
- && chown -R node:node /app/.m2 \
- && rm /tmp/pom.xml
-
 FROM base AS builder
 
 COPY . /app