Update CODEOWNERS (#1689)

Co-authored-by: LocalStack Bot <localstack-bot@users.noreply.github.com>

Author: localstack-bot

CODEOWNERS

@@ -150,7 +150,7 @@
 /content/en/user-guide/aws/memorydb/ @silv-io
 
 # mq
-/content/en/user-guide/aws/mq/ @ackdav @giograno
+/content/en/user-guide/aws/mq/ @giograno
 
 # mwaa
 /content/en/user-guide/aws/mwaa/ @viren-nadkarni
@@ -218,11 +218,8 @@
 # textract
 /content/en/user-guide/aws/textract/ @HarshCasper
 
-# timestream
-/content/en/user-guide/aws/timestream/ @ackdav
-
 # transcribe
-/content/en/user-guide/aws/transcribe/ @sannya-singal @ackdav
+/content/en/user-guide/aws/transcribe/ @sannya-singal
 
 # xray
 /content/en/user-guide/aws/xray/ @joe4dev