chore: [java] synthtool not to create an initial gitignore. (googleap…

…is#1672) (googleapis#1373)

* chore: [java] synthtool not to create an initial gitignore.

Given that new generated libraries will come to the Java monorepo
going forward and that any new hand-written libraries can get
a new .gitignore from humans, there's no need to automatically
prepare .gitignore file.

* deleting gitignore

* deleting .gitignore from golden
Source-Link: https://togithub.com/googleapis/synthtool/commit/0baf7e4b652fcc7bf77ec341965c62c0b67e722d
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:25a679b48797fcdd98fe339c885d9595a8be5c16a275d1b466ba98e6951a3217

README.md

@@ -58,13 +58,13 @@ implementation 'com.google.cloud:google-cloud-pubsub'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-pubsub:1.120.23'
+implementation 'com.google.cloud:google-cloud-pubsub:1.120.24'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-pubsub" % "1.120.23"
+libraryDependencies += "com.google.cloud" % "google-cloud-pubsub" % "1.120.24"
 ```
 
 ## Authentication