Remove extra comment, it applies to all creations of Ruby Arrays

Author: eregon

src/main/java/org/truffleruby/core/GCNodes.java

@@ -189,7 +189,6 @@ protected RubyArray stat(
 
             MemoryUsage usage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
 
-            // Use an object array instead because otherwise ArrayHelpers.java line 51 complains
             Object[] memoryPoolNamesCast = new Object[memoryPoolNames.length];
             for (int i = 0; i < memoryPoolNames.length; i++) {
                 memoryPoolNamesCast[i] = makeStringNode