[GFS2] Remove unrequired header file
[GFS2] Remove unrequired header file

"grep -nr 'list\.h' gfs2/" found that this file was not included anywhere and
removing it does not stop any of the gfs2 utils from building so it seems that
it can be removed.

Signed-off-by: Andrew Price <e3579b1e47f273529f0f929453e939a68ede9fd1@andrewprice.me.uk>
Signed-off-by: Fabio M. Di Nitto <2a6cdea7ef0235e0bb63b1ea9f60be6948e26834@fabbione.net>

stevenraspudic/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents,asp24/resource-agents