Removing outdated STS code owners and adding one that was missing am: 25018c78e0 am: c3d277a0f4 am: b24b80545e am: e3764a2f2c

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/15729185

Change-Id: I718c18693b256c8d0fc7f3a6ecae5411f9aa8337