Remove dependency declaration for stapler to fix building the plugin
Remove dependency declaration for stapler to fix building the plugin

Issuing `mvn install` would throw the following:

Tests in error:
  org.jvnet.hudson.test.JellyTestSuiteBuilder$JellyTestSuite(org.jvnet.hudson.test.junit.FailedTest): com/google/common/cache/CacheBuilder
  testCliSanity(org.jvnet.hudson.test.PluginAutomaticTestBuilder$CliSanityTest): second instance

perforce/hth-jenkins-plugin,jenkinsci/deveo-plugin,Deveo/jenkins-plugin,jenkinsci/deveo-plugin,Deveo/jenkins-plugin,perforce/hth-jenkins-plugin