Remove OAuth2 test resources and integration tests. (#2493)

Author: christiangoerdes

distribution/src/test/java/com/predic8/membrane/examples/ExampleUnitTests.java

@@ -13,7 +13,6 @@
    limitations under the License. */
 package com.predic8.membrane.examples;
 
-import com.predic8.membrane.examples.withoutinternet.integration.OAuth2ExampleTest;
 import org.junit.platform.suite.api.SelectClasses;
 import org.junit.platform.suite.api.Suite;