Stop using class name heuristics to filter out non-tests.

The bug that made that necessary has been fixed by now.

	Change on 2018/04/18 by mkretzschmar <[email protected]>

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=193361163

testing/junit_ext/src/java/com/google/j2objc/testing/JUnitTestRunner.java

@@ -38,7 +38,6 @@
 import org.junit.runner.RunWith;
 import org.junit.runner.notification.Failure;
 import org.junit.runner.notification.RunListener;
-import org.junit.runners.JUnit4;
 import org.junit.runners.Suite;
 
 /*-[
@@ -259,15 +258,8 @@ protected boolean isJUnit3TestClass(Class<?> cls) {
     return false;
   }
 
-  /**
-   * @return true if {@param cls} is {@link JUnit4} annotated.
-   */
+  /** @return true if {@param cls} is {@link RunWith} annotated. */
   protected boolean isJUnit4TestClass(Class<?> cls) {
-    // Need to find test classes, otherwise crashes with b/11790448.
-    if (!cls.getName().endsWith("Test")) {
-      return false;
-    }
-    // Check the annotation.
     return cls.getAnnotation(RunWith.class) != null;
   }