Revert "Bazel: Activate RBE configuration on GCP"

This reverts commit 25999b12a38fc65b09a55cdb16f89833b65fe612.

Reason for revert: RBE build is failing on GCP.

Error message is:

ERROR: Failed to init auth credentials: The Application Default
Credentials are not available. They are available if running in
Google Compute Engine. Otherwise, the environment variable
GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file
defining the credentials.

Change-Id: I7312ff6d8c2fb1a3993b3d5ec1307ae28009b119
diff --git a/jenkins/checker_definitions.txt b/jenkins/checker_definitions.txt
index f2cbf79..37dd066 100644
--- a/jenkins/checker_definitions.txt
+++ b/jenkins/checker_definitions.txt
@@ -1,17 +1,6 @@
 POST /plugins/checks/checkers/ HTTP/1.0
   Content-Type: application/json; charset=UTF-8
   {
-    "uuid": "gerritforge:rbe-a6a0e4682515f3521897c5f950d1394f4619d928",
-    "name": "RBE Build/Tests",
-    "description": "Builds the code base and executes unit/integration tests on RBE",
-    "repository": "gerrit",
-    "query": "branch:master",
-    "blocking": []
-  }
-
-POST /plugins/checks/checkers/ HTTP/1.0
-  Content-Type: application/json; charset=UTF-8
-  {
     "uuid": "gerritforge:notedb-a6a0e4682515f3521897c5f950d1394f4619d928",
     "name": "Build/Tests",
     "description": "Builds the code base and executes unit/integration tests",
diff --git a/jenkins/gerrit-bazel-build.sh b/jenkins/gerrit-bazel-build.sh
index d02c40b..39049e4 100644
--- a/jenkins/gerrit-bazel-build.sh
+++ b/jenkins/gerrit-bazel-build.sh
@@ -4,9 +4,6 @@
 
 cd gerrit
 
-echo "Build with mode=$MODE"
-echo '----------------------------------------------'
-
 if git show --diff-filter=AM --name-only --pretty="" HEAD | grep -q .bazelversion
 then
   export BAZEL_OPTS=""
@@ -14,14 +11,6 @@
 
 java -fullversion
 bazelisk version
-
-if [[ "$MODE" == *"rbe"* ]]
-then
-    # TODO(davido): Figure out why javadoc part of api-rule doesn't work on RBE.
-    # See: https://github.com/bazelbuild/bazel/issues/12765 for more background.
-  bazelisk build --config=remote --remote_instance_name=projects/api-project-164060093628/instances/default_instance plugins:core release api-skip-javadoc
-else
-  bazelisk build $BAZEL_OPTS plugins:core release api
-  tools/maven/api.sh install
-  tools/eclipse/project.py --bazel bazelisk
-fi
+bazelisk build $BAZEL_OPTS plugins:core release api
+tools/maven/api.sh install
+tools/eclipse/project.py --bazel bazelisk
diff --git a/jenkins/gerrit-bazel-verifier-test.sh b/jenkins/gerrit-bazel-verifier-test.sh
index 102b229..8851b4d 100755
--- a/jenkins/gerrit-bazel-verifier-test.sh
+++ b/jenkins/gerrit-bazel-verifier-test.sh
@@ -7,14 +7,7 @@
 echo "Test with mode=$MODE"
 echo '----------------------------------------------'
 
-case $TARGET_BRANCH$MODE in
-  masterrbe)
-    TEST_TAG_FILTER="-flaky,-elastic,-git-protocol-v2"
-    BAZEL_OPTS="--config=remote --remote_instance_name=projects/api-project-164060093628/instances/default_instance"
-    ;;
-  masterNoteDb)
-    TEST_TAG_FILTER="-flaky,elastic,git-protocol-v2"
-    ;;
+case $TARGET_BRANCH in
   stable-2.*)
     TEST_TAG_FILTER="-flaky,-elastic"
     ;;
@@ -37,7 +30,7 @@
 if [[ "$MODE" == *"reviewdb"* ]]
 then
   GERRIT_NOTEDB="--test_env=GERRIT_NOTEDB=OFF"
-  bazelisk test $GERRIT_NOTEDB $BAZEL_OPTS //...
+  bazelisk test $BAZEL_OPTS //...
 fi
 
 if [[ "$MODE" == *"notedb"* ]]
@@ -46,11 +39,6 @@
   bazelisk test $GERRIT_NOTEDB $BAZEL_OPTS //...
 fi
 
-if [[ "$MODE" == *"rbe"* ]]
-then
-  bazelisk test $BAZEL_OPTS //...
-fi
-
 if [[ "$MODE" == *"polygerrit"* ]]
 then
 
diff --git a/jenkins/gerrit-verifier.yaml b/jenkins/gerrit-verifier.yaml
index 81b5739..150738c 100644
--- a/jenkins/gerrit-verifier.yaml
+++ b/jenkins/gerrit-verifier.yaml
@@ -64,7 +64,6 @@
             - reviewdb
             - notedb
             - polygerrit
-            - rbe
           description: 'Type of verification to execute'
     properties:
       - authorization:
diff --git a/vars/gerritPipeline.groovy b/vars/gerritPipeline.groovy
index b5711e8..6f25cd5 100644
--- a/vars/gerritPipeline.groovy
+++ b/vars/gerritPipeline.groovy
@@ -130,9 +130,7 @@
 
 def collectBuildModes() {
     Builds.modes = []
-    if (env.GERRIT_BRANCH == "master") {
-        Builds.modes = ["notedb", "rbe"]
-    } else if (env.GERRIT_BRANCH ==~ /stable-3.*/) {
+    if (env.GERRIT_BRANCH ==~ /stable-3.*/ || env.GERRIT_BRANCH == "master") {
         Builds.modes = ["notedb"]
     } else if (env.GERRIT_BRANCH == "stable-2.16") {
         Builds.modes = ["notedb", "reviewdb"]