case-mremap-xread-rand-mt: correct the sparse file name to be removed

The sparse file we created in this case does not have any -$index so
we shouldn't add that part when removing sparse files. Fix it.

/result/vm-scalability/300s-mremap-xread-rand-mt-performance/lkp-hsw-4ep1/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/v4.8/1
stderr: rm: cannot remove '/tmp/vm-scalability-tmp/vm-scalability/sparse-mremap-xread-rand-mt-*': No such file or directory

Buglink: https://jira01.devtools.intel.com/browse/OLT-1554
Reported-by: Philip Li <philip.li@intel.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
1 file changed