chore: remove staging bucket v2 (#219)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/81128f7c-8919-49e3-ad04-4808a30efef8/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-workflows.git",
-        "sha": "da452b274a80ed3396d95c3396dae8375ceabaf8"
+        "sha": "29d4e944e3dfddeb535cc9ebe6963f8aee550092"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "bb854b6c048619e3be4e8b8ce8ed10aa74ea78ef"
+        "sha": "572ef8f70edd9041f5bcfa71511aed6aecfc2098"
       }
     }
   ],