Remove unreferenced function declarations.

These seem to be leftovers from old patches, perhaps.

Masahiko Sawada

Discussion: https://postgr.es/m/CAD21AoDuAYsRb3Q9aobkFZ6DZMWxsyg4HOmgkwgeWNfSkTwGxw@mail.gmail.com

src/include/access/transam.h

@@ -209,7 +209,6 @@ extern PGDLLIMPORT VariableCache ShmemVariableCache;
 extern bool TransactionIdDidCommit(TransactionId transactionId);
 extern bool TransactionIdDidAbort(TransactionId transactionId);
 extern bool TransactionIdIsKnownCompleted(TransactionId transactionId);
-extern void TransactionIdAbort(TransactionId transactionId);
 extern void TransactionIdCommitTree(TransactionId xid, int nxids, TransactionId *xids);
 extern void TransactionIdAsyncCommitTree(TransactionId xid, int nxids, TransactionId *xids, XLogRecPtr lsn);
 extern void TransactionIdAbortTree(TransactionId xid, int nxids, TransactionId *xids);

src/include/commands/tablecmds.h

@@ -60,8 +60,6 @@ extern void SetRelationHasSubclass(Oid relationId, bool relhassubclass);
 
 extern ObjectAddress renameatt(RenameStmt *stmt);
 
-extern ObjectAddress renameatt_type(RenameStmt *stmt);
-
 extern ObjectAddress RenameConstraint(RenameStmt *stmt);
 
 extern ObjectAddress RenameRelation(RenameStmt *stmt);

src/include/utils/dsa.h

@@ -99,8 +99,6 @@ typedef pg_atomic_uint64 dsa_pointer_atomic;
  */
 typedef dsm_handle dsa_handle;
 
-extern void dsa_startup(void);
-
 extern dsa_area *dsa_create(int tranche_id);
 extern dsa_area *dsa_create_in_place(void *place, size_t size,
 									 int tranche_id, dsm_segment *segment);