ART: Fix comments and link before MIR to next in Remove method

There are some comments without a period at the end and the remove does not
link the MIR before the one we want to remove to the one after.

Change-Id: Ia1263d3191e39b4f8f76ef62b28f7fbb1c6c0403
Signed-off-by: Jean Christophe Beyler <jean.christophe.beyler@intel.com>