Remove Google Java format plugin

It's [not yet compatible with Gradle configuration
caching](sherter/google-java-format-gradle-plugin#55).

build.gradle

@@ -12,7 +12,6 @@ plugins {
 	id 'com.diffplug.eclipse.mavencentral' version '3.33.2' apply false
 	id 'com.dorongold.task-tree' version '2.1.0'
 	id 'com.github.ben-manes.versions' version '0.39.0'
-	id 'com.github.sherter.google-java-format' version '0.9'
 	id 'de.undercouch.download'
 	id 'nebula.lint' version '17.2.3'
 }
@@ -251,27 +250,6 @@ if (isWindows) {
 	}
 }
 
-// Java formatting
-googleJavaFormat {
-	group 'verification'
-	toolVersion = '1.7'
-	// exclude since various tests make assertions based on
-	// source positions in the test inputs.  to auto-format
-	// we also need to update the test assertions
-	exclude 'com.ibm.wala.cast.java.test.data/**/*.java'
-}
-
-final verifyGoogleJavaFormat = tasks.named('verifyGoogleJavaFormat') {
-	group 'verification'
-
-	// workaround for <https://github.com/sherter/google-java-format-gradle-plugin/issues/43>
-	final stampFile = project.layout.buildDirectory.file(name)
-	outputs.file stampFile
-	doLast {
-		stampFile.get().asFile.text = ''
-	}
-}
-
 tasks.named('autoLintGradle') {
 	// `autoLintGradle` creates no output files, which causes Gradle to treat it as always
 	// out-of-date.  By creating a simple, empty stamp file to record that this task has run and
@@ -302,7 +280,7 @@ final check = tasks.register('check') {
 	if (!(isWindows && System.getenv('GITHUB_ACTIONS') == 'true')) {
 		// Known to be broken on Windows when running as a GitHub Action, but not intentionally so.
 		// Please fix if you know how!  <https://github.com/wala/WALA/issues/608>
-		dependsOn verifyGoogleJavaFormat
+		// dependsOn verifyGoogleJavaFormat
 	}
 }
 

com.ibm.wala.dalvik/build.gradle

@@ -155,10 +155,4 @@ tasks.named('test') {
 	].collect(layout.buildDirectory.&file))
 }
 
-googleJavaFormat {
-	// generated files
-	exclude "$name/parser.java"
-	exclude "$name/sym.java"
-}
-
 apply from: rootProject.file("gradle-mvn-push.gradle")