Remove the unused field fixed_offs from dict_field_t.

dict/dict0dict.c

@@ -1632,17 +1632,6 @@ dict_index_add_col(
 	if (!(dtype_get_prtype(&col->type) & DATA_NOT_NULL)) {
 		index->n_nullable++;
 	}
-
-	if (index->n_def > 1) {
-		const dict_field_t*	field2 =
-			dict_index_get_nth_field(index, index->n_def - 2);
-		field->fixed_offs = (!field2->fixed_len ||
-					field2->fixed_offs == ULINT_UNDEFINED)
-				? ULINT_UNDEFINED
-				: field2->fixed_len + field2->fixed_offs;
-	} else {
-		field->fixed_offs = 0;
-	}
 }
 
 /***********************************************************************

include/dict0mem.h

@@ -175,10 +175,6 @@ struct dict_field_struct{
 	ulint		fixed_len;	/* 0 or the fixed length of the
 					column if smaller than
 					DICT_MAX_INDEX_COL_LEN */
-	ulint		fixed_offs;	/* offset to the field, or
-					ULINT_UNDEFINED if it is not fixed
-					within the record (due to preceding
-					variable-length fields) */
 };
 
 /* Data structure for an index tree */