fix some warnings

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/binary/BinaryBooleanNode.java

@@ -52,7 +52,7 @@ import com.oracle.truffle.r.runtime.ops.BooleanOperationFactory;
 /**
  * Represents a binary or unary operation from the 'logical' subset of Ops R group. The concrete
  * operation is implemented by factory object given as a constructor parameter, e.g.
- * {@link com.oracle.truffle.r.runtime.ops.BinaryCompare.Equal} or
+ * com.oracle.truffle.r.runtime.ops.BinaryCompare.Equal or
  * {@link com.oracle.truffle.r.runtime.ops.BinaryLogic.And}.
  */
 public abstract class BinaryBooleanNode extends BinaryNodeBase {

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/helpers/RFactorNodes.java

@@ -30,6 +30,7 @@ import com.oracle.truffle.api.profiles.ConditionProfile;
 import com.oracle.truffle.r.nodes.attributes.AttributeAccess;
 import com.oracle.truffle.r.nodes.unary.CastStringNode;
 import com.oracle.truffle.r.nodes.unary.CastStringNodeGen;
+import com.oracle.truffle.r.nodes.unary.IsFactorNode;
 import com.oracle.truffle.r.runtime.RRuntime;
 import com.oracle.truffle.r.runtime.data.RAttributeProfiles;
 import com.oracle.truffle.r.runtime.data.RDataFactory;
@@ -40,7 +41,7 @@ import com.oracle.truffle.r.runtime.data.model.RAbstractLogicalVector;
 
 /**
  * Contains helper nodes related to factors, special R class of {@link RAbstractIntVector}. Note:
- * there is also {@see IsFactorNode}, which implements a built-in, for checking factor class.
+ * there is also {@link IsFactorNode}, which implements a built-in, for checking factor class.
  */
 public final class RFactorNodes {
 
@@ -71,7 +72,6 @@ public final class RFactorNodes {
         @Child private CastStringNode castString;
         @Child private AttributeAccess attrAccess = AttributeAccess.create(RRuntime.LEVELS_ATTR_KEY);
 
-        private final RAttributeProfiles attrProfiles = RAttributeProfiles.create();
         private final BranchProfile notVectorBranch = BranchProfile.create();
         private final ConditionProfile nonScalarLevels = ConditionProfile.createBinaryProfile();
         private final ConditionProfile stringVectorLevels = ConditionProfile.createBinaryProfile();