MDEV-13134: Remove an orphan .inc file

mysql-test/suite/innodb/include/alter_instant.inc

-CREATE TABLE t1(f1 INT NOT NULL,
-		f2 INT NOT NULL,
-		f3 INT AS (f2 * f2) VIRTUAL)engine=innodb;
-
-INSERT INTO t1(f1, f2) VALUES(1, 1);
-
---echo #
---echo # ALGORITHM=$algorithm_type
---echo #
-
---enable_info
---echo # Add column at the end of the table
---error $error_code
---eval ALTER TABLE t1 ADD COLUMN f4 char(100) default "BIG WALL", ALGORITHM=$algorithm_type
-
---echo # Change virtual column expression
---error $error_code
---eval ALTER TABLE t1 CHANGE f3 f3 INT AS (f2 * f2) VIRTUAL, ALGORITHM=$algorithm_type
-
---echo # Add virtual column
---error $error_code
---eval ALTER TABLE t1 ADD COLUMN f5 INT AS (f2) VIRTUAL, ALGORITHM=$algorithm_type
-
---echo # Rename Column
---error $error_code
---eval ALTER TABLE t1 CHANGE f3 vcol INT AS (f2) VIRTUAL, ALGORITHM=$algorithm_type
-
---echo # Rename table
---error $error_code
---eval ALTER TABLE t1 RENAME t2, algorithm=$algorithm_type
-
-DROP TABLE t2;
---disable_info