[cleanup](fe) cleanup useless code. (#16129)

* [cleanup](Nereids): cleanup useless code.

* revert ErrorCode.java

fe/fe-common/src/main/java/org/apache/doris/catalog/ScalarType.java

@@ -1096,51 +1096,6 @@ public class ScalarType extends Type {
         return PrimitiveType.isImplicitCast(type.getPrimitiveType(), targetType.getPrimitiveType());
     }
 
-    @Override
-    public int getStorageLayoutBytes() {
-        switch (type) {
-            case BOOLEAN:
-            case TINYINT:
-                return 1;
-            case SMALLINT:
-                return 2;
-            case INT:
-            case FLOAT:
-            case DECIMAL32:
-                return 4;
-            case BIGINT:
-            case TIME:
-            case DATETIME:
-            // TODO(Gabriel): unify execution engine and storage engine
-            case TIMEV2:
-            case DATETIMEV2:
-            case DECIMAL64:
-                return 8;
-            case LARGEINT:
-            case DECIMALV2:
-            case DECIMAL128:
-                return 16;
-            case DOUBLE:
-                return 12;
-            case DATEV2:
-            case DATE:
-                return 3;
-            case CHAR:
-            case VARCHAR:
-                return len;
-            case HLL:
-                return 16385;
-            case BITMAP:
-                return 1024; // this is a estimated value
-            case QUANTILE_STATE:
-                return 1024; // TODO(weixiang): no used in FE, figure out whether can delete this funcion?
-            case STRING:
-                return 1024;
-            default:
-                return 0;
-        }
-    }
-
     @Override
     public TColumnType toColumnTypeThrift() {
         TColumnType thrift = new TColumnType();

fe/fe-common/src/main/java/org/apache/doris/catalog/Type.java

@@ -1704,13 +1704,9 @@ public abstract class Type {
         }
     }
 
-    public int getStorageLayoutBytes() {
-        return 0;
-    }
-
     public int getIndexSize() {
         if (this.getPrimitiveType() == PrimitiveType.CHAR) {
-            return ((ScalarType) this).getLength();
+            return this.getLength();
         } else {
             return this.getPrimitiveType().getOlapColumnIndexSize();
         }