Squash changes to tend and dent tables

db/migrations/1534295712_create_tend.up.sql

@@ -1,7 +1,7 @@
 CREATE TABLE maker.tend (
   id            SERIAL PRIMARY KEY,
   header_id        INTEGER NOT NULL REFERENCES headers (id) ON DELETE CASCADE,
-  bid_id           NUMERIC NOT NULL UNIQUE,
+  bid_id           NUMERIC NOT NULL,
   lot              NUMERIC,
   bid              NUMERIC,
   guy              TEXT,

db/migrations/1534799167_create_dent.up.sql

@@ -1,7 +1,7 @@
 CREATE TABLE maker.dent (
   id            SERIAL PRIMARY KEY,
   header_id        INTEGER NOT NULL REFERENCES headers (id) ON DELETE CASCADE,
-  bid_id           NUMERIC NOT NULL UNIQUE,
+  bid_id           NUMERIC NOT NULL,
   lot              NUMERIC,
   bid              NUMERIC,
   guy              BYTEA,

db/migrations/1538580167_remove_bid_id_unique_constraint.down.sql

@@ -1,5 +0,0 @@
-ALTER TABLE maker.tend
- add constraint tend_bid_id_key unique (bid_id);
-
-ALTER TABLE maker.dent
- add constraint dent_bid_id_key unique (bid_id);

db/migrations/1538580167_remove_bid_id_unique_constraint.up.sql

@@ -1,5 +0,0 @@
-ALTER TABLE maker.tend
- drop constraint tend_bid_id_key;
-
-ALTER TABLE maker.dent
- drop constraint dent_bid_id_key;