In ecpg removed old leftover check for given connection name.

Ever since we introduced real prepared statements this should work for
different connections. The old solution just emulating prepared statements,
though, wasn't able to handle this.

Closes: #6309

src/interfaces/ecpg/preproc/ecpg.addons

@@ -19,9 +19,6 @@ ECPG: stmtClosePortalStmt block
 	}
 ECPG: stmtDeallocateStmt block
 	{
-		if (connection)
-			mmerror(PARSE_ERROR, ET_ERROR, "AT option not allowed in DEALLOCATE statement");
-
 		output_deallocate_prepare_statement($1);
 	}
 ECPG: stmtDeclareCursorStmt block
@@ -72,8 +69,6 @@ ECPG: stmtViewStmt rule
 	}
 	| ECPGDeallocateDescr
 	{
-		if (connection)
-			mmerror(PARSE_ERROR, ET_ERROR, "AT option not allowed in DEALLOCATE statement");
 		fprintf(yyout,"ECPGdeallocate_desc(__LINE__, %s);",$1);
 		whenever_action(0);
 		free($1);