WHOA! These aren’t really comments even though they look that way. They are conditional-execution tokens.
Take this line:
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
If the version of mySQL is 4.00.14 or higher, then the MySQL server will run this statement.
This magic comment syntax is documented in the Comment Syntax section of the manual.
You probably don’t want to get rid of this stuff.