Remove RELKIND_UNCATALOGED.

This may have been important at some point in the past, but it no
longer does anything useful.

Review by Tom Lane.

src/include/catalog/pg_class.h

@@ -147,7 +147,6 @@ DESCR("");
 #define		  RELKIND_VIEW			  'v'		/* view */
 #define		  RELKIND_COMPOSITE_TYPE  'c'		/* composite type */
 #define		  RELKIND_FOREIGN_TABLE   'f'		/* foreign table */
-#define		  RELKIND_UNCATALOGED	  'u'		/* not yet cataloged */
 
 #define		  RELPERSISTENCE_PERMANENT	'p'		/* regular table */
 #define		  RELPERSISTENCE_UNLOGGED	'u'		/* unlogged permanent table */

src/include/utils/relcache.h

@@ -70,7 +70,8 @@ extern Relation RelationBuildLocalRelation(const char *relname,
 						   Oid reltablespace,
 						   bool shared_relation,
 						   bool mapped_relation,
-						   char relpersistence);
+						   char relpersistence,
+						   char relkind);
 
 /*
  * Routine to manage assignment of new relfilenode to a relation