qa/suites/rados/standalone: remove mon_election symlink

The standalone tests need parameters to be passed as ceph_args to
override defaults.

This was just doubling the number of standalone tests being run in each rados
run with no effect!

Signed-off-by: Neha Ojha <nojha@redhat.com>
(cherry picked from commit c8e48c5c2517c5a28705a99339e99fa8fd8d3e96)

diff --git a/qa/suites/rados/standalone/mon_election b/qa/suites/rados/standalone/mon_election
deleted file mode 120000 (symlink)
index 3f331e6..0000000
--- a/qa/suites/rados/standalone/mon_election
+++ /dev/null
@@ -1 +0,0 @@
-.qa/mon_election
\ No newline at end of file