Minor, get rid of SAMs in some loadJava tests

compiler/testData/loadJava/compiledJava/PrivateMembers.java

@@ -10,19 +10,12 @@ public class PrivateMembers {
     private void method() {
     }
 
-    private void samAdapter(SamInterface r) {
-    }
-
     private static void staticMethod() {
     }
 
     private class Inner {
     }
 
-    private interface SamInterface {
-        void foo();
-    }
-
     private static class Nested {
         private static void staticMethodInNested() {
         }