Delete outdated comments on tests

Author: odersky

tests/pos-special/i2797/Fork_1.java

@@ -1,6 +1,3 @@
-// Test is pending because we have no good way to test it.
-// We need to: Compile Fork.java, and then compile Test.scala
-// with Fork.class on the classpath.
 public @interface Fork_1 {
   int value() default -1;
   String[] jvmArgs() default { "nope" };

tests/pos-special/i2797/Test_2.scala

@@ -1,5 +1,2 @@
-// Test is pending because we have no good way to test it.
-// We need to: Compile Fork.java, and then compile Test.scala
-// with Fork.class on the classpath.
 @Fork_1(jvmArgs = Array("I'm", "hot"))
 class Test