chore: remove staging bucket v2 (#583)

This PR was generated using Autosynth. 🌈 Synth log will be available here: https://source.cloud.google.com/results/invocations/7b181ea6-cd1c-49bd-bb79-2996c12fa815/targets - [ ] To automatically regenerate this PR, check this box. (May take up to 24 hours.) Source-Link: googleapis/synthtool@572ef8f

Author: yoshi-automation

.kokoro/release/publish_javadoc.sh

@@ -24,11 +24,6 @@ if [[ -z "${STAGING_BUCKET}" ]]; then
  exit 1
 fi
 
-if [[ -z "${STAGING_BUCKET_V2}" ]]; then
- echo "Need to set STAGING_BUCKET_V2 environment variable"
- exit 1
-fi
-
 # work from the git root directory
 pushd $(dirname "$0")/../../
 

synth.metadata

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-pubsub.git",
- "sha": "116396f587e2a84cb89c684b7f2c6708237dfaf2"
+ "sha": "134273dc751e3bfb23c77384c8173c7b693a9757"
  }
  },
  {
@@ -19,7 +19,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "bb854b6c048619e3be4e8b8ce8ed10aa74ea78ef"
+ "sha": "572ef8f70edd9041f5bcfa71511aed6aecfc2098"
  }
  }
  ],