Rename TC_tx_power_start_ramp_down_bcch

Ramping down power if the oml link is lost was removed in osmo-bts.
Instead TC_tx_power_down_bcch checks that the rx power received is not
> 0 after dropping the oml link.

Change-Id: I463679d9678b95b7d3a5ace711c6ce17b3b24689
Depends: Ida1d7bbf094958b9142af306dbf84206729a609e (osmo-bts.git)
Related: SYS#6237
diff --git a/bts/expected-results.xml b/bts/expected-results.xml
index e6ec9cf..2039d17 100644
--- a/bts/expected-results.xml
+++ b/bts/expected-results.xml
@@ -40,7 +40,7 @@
   <testcase classname='BTS_Tests' name='TC_meas_res_speech_tchf_sapi3' time='MASKED'/>
   <testcase classname='BTS_Tests' name='TC_meas_res_speech_tchh_sapi3' time='MASKED'/>
   <testcase classname='BTS_Tests' name='TC_tx_power_start_ramp_up_bcch' time='MASKED'/>
-  <testcase classname='BTS_Tests' name='TC_tx_power_start_ramp_down_bcch' time='MASKED'/>
+  <testcase classname='BTS_Tests' name='TC_tx_power_down_bcch' time='MASKED'/>
   <testcase classname='BTS_Tests' name='TC_tx_power_ramp_adm_state_change' time='MASKED'/>
   <testcase classname='BTS_Tests' name='TC_rsl_bs_pwr_static_ass' time='MASKED'/>
   <testcase classname='BTS_Tests' name='TC_rsl_bs_pwr_static_power_control' time='MASKED'/>