Remove superfluous PQExpBuffer resetting

Since the buffer was just created, there is no reason to immediately
reset it.

Reviewed-by: Ranier Vilela <ranier.vf@gmail.com>
Discussion: https://postgr.es/m/C2F05B3C-1414-45DD-AE09-6FEE4D0F89BD@yesql.se

Author: danielgustafsson

src/bin/pg_dump/pg_dump.c

@@ -4290,8 +4290,6 @@ getPublications(Archive *fout)
 
 	query = createPQExpBuffer();
 
-	resetPQExpBuffer(query);
-
 	/* Get the publications. */
 	if (fout->remoteVersion >= 130000)
 		appendPQExpBufferStr(query,