MAINTAINERS/OWNERS: Removal of `msbarth` reviewer

Soon, will no longer be available as a reviewer.

Change-Id: Ia3a4511f445df279ae297c5abe6ba0e25af1065c
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index f535173..c3476ab 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -45,5 +45,4 @@
 M:  Andrew Geissler <geissonator@yahoo.com> <geissonator!>
 M:  Joel Stanley <joel@jms.id.au> <shenki!>
 M:  Patrick Williams <patrick@stwcx.xyz> <stwcx!>
-R:  Matthew Barth <msbarth@linux.ibm.com> <msbarth!>
 R:  Andrew Jeffery <andrew@aj.id.au> <amboar!>
diff --git a/OWNERS b/OWNERS
index 968c0fe..7bdff65 100644
--- a/OWNERS
+++ b/OWNERS
@@ -38,7 +38,6 @@
 
 reviewers:
 - andrew@aj.id.au
-- msbarth@linux.ibm.com
 
 matchers:
 
@@ -52,9 +51,6 @@
 - name: Joel Stanley
   email: joel@jms.id.au
   discord: joel
-- name: Matthew Barth
-  email: msbarth@linux.ibm.com
-  discord: msbarth
 - name: Patrick Williams
   email: patrick@stwcx.xyz
   discord: stwcx