Remove push_pull_open_drain_check from testplan

The OD/PP check is being checked for every test in I3cBusMonitor after
improvement introduced in 51b558f. There is no need to create a
dedicated test for that.

Internal-tag: [#96476]

Author: robertszczepanski

verification/testplan/top/target.hjson

@@ -328,16 +328,6 @@
       tests: ["priv_write_tight_timing_sr"]
       tags: ["top"]
     }
-    {
-      name: push_pull_open_drain_check
-      desc:
-        '''
-        Perform a random I3C transactions to the target device. Monitor the `sel_od_pp_o` optput and ensure
-        the core drives the bus in the correct mode.
-        '''
-      tests: [""]
-      tags: ["top"]
-    }
     {
       name: bus_idle
       desc: