style fixes

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/CExtNodes.java

@@ -547,7 +547,7 @@ public static SizeofWCharNode create() {
 
     public static class IsNode extends CExtBaseNode {
         @CompilationFinal private TruffleObject isFunc = null;
-        @Child Node executeNode = Message.createExecute(2).createNode();
+        @Child Node executeNode = Message.EXECUTE.createNode();
 
         public boolean execute(PythonNativeObject a, PythonNativeObject b) {
             try {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/common/HashingStorageNodes.java

@@ -70,7 +70,6 @@
 import com.oracle.graal.python.builtins.objects.dict.PDict;
 import com.oracle.graal.python.builtins.objects.function.PKeyword;
 import com.oracle.graal.python.builtins.objects.ints.PInt;
-import com.oracle.graal.python.builtins.objects.list.PList;
 import com.oracle.graal.python.builtins.objects.object.PythonObject;
 import com.oracle.graal.python.builtins.objects.str.PString;
 import com.oracle.graal.python.builtins.objects.type.PythonClass;

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/getsetdescriptor/GetSetDescriptorTypeBuiltins.java

@@ -52,7 +52,6 @@
 import com.oracle.graal.python.builtins.CoreFunctions;
 import com.oracle.graal.python.builtins.PythonBuiltinClassType;
 import com.oracle.graal.python.builtins.PythonBuiltins;
-import com.oracle.graal.python.builtins.objects.PNone;
 import com.oracle.graal.python.builtins.objects.type.PythonBuiltinClass;
 import com.oracle.graal.python.builtins.objects.type.PythonClass;
 import com.oracle.graal.python.nodes.PGuards;
@@ -63,7 +62,6 @@
 import com.oracle.graal.python.nodes.function.builtins.PythonUnaryBuiltinNode;
 import com.oracle.graal.python.nodes.object.GetClassNode;
 import com.oracle.graal.python.runtime.PythonCore;
-import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
 import com.oracle.truffle.api.dsl.GenerateNodeFactory;
 import com.oracle.truffle.api.dsl.NodeFactory;

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/PGuards.java

@@ -64,7 +64,6 @@
 import com.oracle.graal.python.builtins.objects.tuple.PTuple;
 import com.oracle.graal.python.builtins.objects.type.PythonBuiltinClass;
 import com.oracle.graal.python.builtins.objects.type.PythonClass;
-import com.oracle.graal.python.runtime.PythonCore;
 import com.oracle.graal.python.runtime.sequence.PSequence;
 import com.oracle.graal.python.runtime.sequence.storage.BasicSequenceStorage;
 import com.oracle.graal.python.runtime.sequence.storage.ByteSequenceStorage;