clean unused method

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/FieldDataType.java

@@ -43,14 +43,8 @@ public interface FieldDataType<T extends FieldData> {
         public static final LongFieldDataType LONG = new LongFieldDataType();
         public static final FloatFieldDataType FLOAT = new FloatFieldDataType();
         public static final DoubleFieldDataType DOUBLE = new DoubleFieldDataType();
-
-        public static boolean isNumeric(FieldDataType type) {
-            return type == INT || type == LONG || type == FLOAT || type == DOUBLE;
-        }
     }
 
-    Class<T> fieldDataClass();
-
     FieldComparatorSource newFieldComparatorSource(FieldDataCache cache);
 
     T load(IndexReader reader, String fieldName) throws IOException;

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/doubles/DoubleFieldDataType.java

@@ -32,10 +32,6 @@ import java.io.IOException;
  */
 public class DoubleFieldDataType implements FieldDataType<DoubleFieldData> {
 
-    @Override public Class<DoubleFieldData> fieldDataClass() {
-        return DoubleFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/floats/FloatFieldDataType.java

@@ -32,10 +32,6 @@ import java.io.IOException;
  */
 public class FloatFieldDataType implements FieldDataType<FloatFieldData> {
 
-    @Override public Class<FloatFieldData> fieldDataClass() {
-        return FloatFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/ints/IntFieldDataType.java

@@ -32,10 +32,6 @@ import java.io.IOException;
  */
 public class IntFieldDataType implements FieldDataType<IntFieldData> {
 
-    @Override public Class<IntFieldData> fieldDataClass() {
-        return IntFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/longs/LongFieldDataType.java

@@ -32,10 +32,6 @@ import java.io.IOException;
  */
 public class LongFieldDataType implements FieldDataType<LongFieldData> {
 
-    @Override public Class<LongFieldData> fieldDataClass() {
-        return LongFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/shorts/ShortFieldDataType.java

@@ -32,10 +32,6 @@ import java.io.IOException;
  */
 public class ShortFieldDataType implements FieldDataType<ShortFieldData> {
 
-    @Override public Class<ShortFieldData> fieldDataClass() {
-        return ShortFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {

modules/elasticsearch/src/main/java/org/elasticsearch/index/field/data/strings/StringFieldDataType.java

@@ -32,10 +32,6 @@ import java.io.IOException;
  */
 public class StringFieldDataType implements FieldDataType<StringFieldData> {
 
-    @Override public Class<StringFieldData> fieldDataClass() {
-        return StringFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {

modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/xcontent/geo/GeoPointFieldDataType.java

@@ -35,10 +35,6 @@ public class GeoPointFieldDataType implements FieldDataType<GeoPointFieldData> {
 
     public static final GeoPointFieldDataType TYPE = new GeoPointFieldDataType();
 
-    @Override public Class<GeoPointFieldData> fieldDataClass() {
-        return GeoPointFieldData.class;
-    }
-
     @Override public FieldComparatorSource newFieldComparatorSource(final FieldDataCache cache) {
         return new FieldComparatorSource() {
             @Override public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {