siteinfo: nios2-linux - remove wrong mutex info
With the commit
afa9f769d62034d4443dfe929422d1d591adf709 some nios2 builds
(uboot, core-image-minimal, etc) were broken due to db trying to use ARM instructions
in mutexes. The reason was db "configure" used the cached entry from nios2-linux
(which was incorrect). So the remedy was to remove the incorrect cached entry
and let db "configure" figure out which is the proper mutex to use.
Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
