removed not used method c.o.t.r.runtime.Utils.dumpFunction which was using...

removed not used method c.o.t.r.runtime.Utils.dumpFunction which was using deprecated GraphPrintVisitor class

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/Utils.java

@@ -39,7 +39,6 @@ import java.util.function.Function;
 import com.oracle.truffle.api.CallTarget;
 import com.oracle.truffle.api.CompilerAsserts;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
-import com.oracle.truffle.api.RootCallTarget;
 import com.oracle.truffle.api.Truffle;
 import com.oracle.truffle.api.TruffleRuntime;
 import com.oracle.truffle.api.frame.Frame;
@@ -48,7 +47,6 @@ import com.oracle.truffle.api.frame.FrameInstance;
 import com.oracle.truffle.api.frame.FrameInstance.FrameAccess;
 import com.oracle.truffle.api.frame.FrameInstanceVisitor;
 import com.oracle.truffle.api.frame.FrameSlot;
-import com.oracle.truffle.api.nodes.GraphPrintVisitor;
 import com.oracle.truffle.api.profiles.ConditionProfile;
 import com.oracle.truffle.api.source.Source;
 import com.oracle.truffle.api.source.SourceSection;
@@ -56,7 +54,6 @@ import com.oracle.truffle.r.runtime.conn.StdConnections;
 import com.oracle.truffle.r.runtime.context.RContext;
 import com.oracle.truffle.r.runtime.context.RContext.ConsoleIO;
 import com.oracle.truffle.r.runtime.data.RDataFactory;
-import com.oracle.truffle.r.runtime.data.RFunction;
 import com.oracle.truffle.r.runtime.data.RLanguage;
 import com.oracle.truffle.r.runtime.data.RNull;
 import com.oracle.truffle.r.runtime.data.RPairList;
@@ -112,16 +109,6 @@ public final class Utils {
         return result;
     }
 
-    public static void dumpFunction(String groupName, RFunction function) {
-        GraphPrintVisitor graphPrinter = new GraphPrintVisitor();
-        RootCallTarget callTarget = function.getTarget();
-        if (callTarget != null) {
-            graphPrinter.beginGroup(groupName);
-            graphPrinter.beginGraph(RRuntime.toString(function)).visit(callTarget.getRootNode());
-        }
-        graphPrinter.printToNetwork(true);
-    }
-
     /**
      * Locates a resource that is used within the implementation, e.g. a file of R code, and returns
      * a {@link Source} instance that represents it. Since the location may vary between