Clear changelogs after services and orchestrator release.

PiperOrigin-RevId: 698499131

Author: brettchabot

runner/android_test_orchestrator/CHANGELOG.md

@@ -12,8 +12,6 @@
 
 **API Changes**
 
-* Update to minSdkVersion 21
-
 **Breaking API Changes**
 
 **Known Issues**

services/CHANGELOG.md

@@ -6,23 +6,12 @@
 
 **Bug Fixes**
 
-* TestStorage: Use input directory location for internal files 
-* StackTrimmer: harden against exceptions coming from Failure.getMessage().
-
 **New Features**
 
-* Adding a LocalSocket-based protocol for the ShellExecutor to talk to the
-  ShellMain. This obsoletes SpeakEasy; if androidx.test.services is killed
-  (e.g. by the low memory killer) between the start of the app_process that
-  invokes LocalSocketShellMain and the start of the test, the test is still able
-  to talk to LocalSocketShellMain.
-
 **Breaking Changes**
 
 **API Changes**
 
-* Update to minSdkVersion 21
-
 **Breaking API Changes**
 
 **Known Issues**