Add tobiast@ to the OWNERS file

Add tobiast@ to the OWNERS file as libcore TL.
Remove pszczepaniak@ as he hasn't been on libcore
for a while.

Test: None
Change-Id: I714d3448ed60006cb58a0f49e95b7b834a6aac36
diff --git a/src/com/android/settings/datetime/timezone/OWNERS b/src/com/android/settings/datetime/timezone/OWNERS
index eac0604..02cf23c 100644
--- a/src/com/android/settings/datetime/timezone/OWNERS
+++ b/src/com/android/settings/datetime/timezone/OWNERS
@@ -1,7 +1,7 @@
 # Default reviewers for this and subdirectories.
 vichang@google.com
+tobiast@google.com
 nfuller@google.com
 
 # Emergency approvers in case the above are not available
-pszczepaniak@google.com
 narayan@google.com