TT#45718 skip creating lnp_numbers constraint index explicitly

Change-Id: I6803a0e33478bc1cc485438f540ba2549540c0a7
(cherry picked from commit 687a444426)

db_scripts/diff/15288_not_replicated.up

@@ -4,7 +4,6 @@ USE billing;
 #undo 15251:
 ALTER TABLE lnp_numbers DROP FOREIGN KEY l_n_lnpproid_ref;
 DROP INDEX l_n_lnpproidnumber_idx ON lnp_numbers;
-CREATE INDEX l_n_lnpproid_ref ON lnp_numbers (lnp_provider_id);
 ALTER TABLE lnp_numbers ADD CONSTRAINT l_n_lnpproid_ref FOREIGN KEY (lnp_provider_id) REFERENCES lnp_providers (id) ON DELETE RESTRICT ON UPDATE CASCADE;
 
 UPDATE lnp_numbers
@@ -12,4 +11,3 @@ SET number=SUBSTRING_INDEX(SUBSTRING_INDEX(number,'--',2),'--',-1)
 WHERE number LIKE 'dupe--%--%';
 
 CREATE INDEX l_n_start_idx ON lnp_numbers (start);
-