[chip dv] Remove `sw_test_timeout_ns` for RV timer test

Signed-off-by: Srikrishna Iyer <sriyer@google.com>
diff --git a/hw/top_earlgrey/dv/chip_sim_cfg.hjson b/hw/top_earlgrey/dv/chip_sim_cfg.hjson
index 6e683cc..abb900d 100644
--- a/hw/top_earlgrey/dv/chip_sim_cfg.hjson
+++ b/hw/top_earlgrey/dv/chip_sim_cfg.hjson
@@ -172,7 +172,6 @@
       name: chip_rv_timer_irq
       uvm_test_seq: chip_sw_base_vseq
       sw_test: sw/device/tests/dif_rv_timer_sanitytest
-      run_opts: ["+sw_test_timeout_ns=12000000"]
     }
     {
       name: chip_coremark