Remove Ofy (#1863)

So long, farewell, adios, ciao, sayonara, 再见!

TESTED=deployed to alpha and used `nomulus list_tlds` to confirm that the web app can receive and serve requests.

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build.gradle

@@ -355,8 +355,6 @@ subprojects {
     }
   }
 
-  if (project.name == 'third_party') return
-
   project.tasks.test.dependsOn runPresubmits
 
   def commonlyExcludedResources = ['**/*.java', '**/BUILD']