Revert "MULE-6866: Changing launcher to work with reduced groovy distribution"

This reverts commit 271aa15719231f2994575da4f0207debb57cdeec.
Revert "MULE-6866: Stop including all of the groovy dependencies"

This reverts commit 69c7b49ade241cb78a47209db1c22bb67f7fec23.

Conflicts:
	distributions/standalone/src/main/resources/MIGRATION.txt