Fix VMware Fleecing Issue with Missing Symlinks

Change VixDiskLibServer process LD_LIBRARY_PATH to use the
actual location of the VixDiskLib libraries. Remove old change
to modify the LD_LIBRARY_PATH of the smart_proxy_worker since it
no longer needs this.
Also remove the spec testing the command line for the
smart_proxy_worker since the change to the lib path is removed.

https://bugzilla.redhat.com/show_bug.cgi?id=1122264