dialect/sql/schema: revert min length logic for state reader (#4359)

While this change is correct and eventually should land, currently it is creating too many noise in existing projects. Therefore, this change is reverted until a better solution is found.

dialect/sql/schema/atlas.go

@@ -528,7 +528,6 @@ func (a *Atlas) StateReader(tables ...*Table) migrate.StateReaderFunc {
 			}
 			a.sqlDialect = drv
 		}
-		a.setupTables(tables)
 		return a.realm(tables)
 	}
 }

dialect/sql/schema/schema_test.go

@@ -302,7 +302,7 @@ CREATE UNIQUE INDEX $name$ ON $pets$ ($name$ DESC);
 CREATE VIEW $pets_without_fur$ ($id$, $name$, $owner_id$) AS SELECT id, name, owner_id FROM pets;
 `, "$", "`"),
 		},
-		{dialect.MySQL, "5.6", my(191)},
+		{dialect.MySQL, "5.6", my(255)},
 		{dialect.MySQL, "5.7", my(255)},
 		{dialect.MySQL, "8", my(255)},
 		{dialect.Postgres, "12", pg},