Refine tuple dispatch and clean up PR review comments

Author: bertysentry

src/main/java/io/jawk/intermediate/AwkTuples.java

@@ -1534,9 +1534,6 @@ public void function(String funcName, int numFormalParams) {
 		queue.add(new Tuple.FunctionTuple(funcName, numFormalParams));
 	}
 
-	// public void callFunction(Address addr, String funcName, int numFormalParams, int numActualParams) {
-	// queue.add(new Tuple.CallFunctionTuple(addr, funcName, numFormalParams, numActualParams)); }
-
 	/**
 	 * <p>
 	 * callFunction.

src/main/java/io/jawk/intermediate/PositionTracker.java

@@ -110,7 +110,7 @@ public int currentIndex() {
 	 *
 	 * @return current tuple
 	 */
-	@SuppressFBWarnings(value = "EI_EXPOSE_REP", justification = "PositionTracker exposes the current immutable instruction node for typed dispatch")
+	@SuppressFBWarnings(value = "EI_EXPOSE_REP", justification = "Tuple mutation is limited to package-internal stream construction and deferred address resolution")
 	public Tuple current() {
 		return tuple;
 	}