MAINTAINERS/OWNERS: Removal of `msbarth` maintainer

Soon, will no longer be available as a maintainer.

Change-Id: I96e0da0454080f70292224874e87bec114ce2aa0
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index b114dd3..18fbfe4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -42,7 +42,6 @@
 START OF MAINTAINERS LIST
 -------------------------
 
-M:  Matthew Barth <msbarth@linux.ibm.com> <msbarth!>
 M:  Matt Spinler <spinler@us.ibm.com> <mspinler[m]!>
 R:  B.J. Wyman <bjwyman@gmail.com> <bjwyman!>
 R:  Shawn McCarney <shawnmm@us.ibm.com> <ShawnMcCarney[m]!>
diff --git a/OWNERS b/OWNERS
index 7210193..25548fd 100644
--- a/OWNERS
+++ b/OWNERS
@@ -32,7 +32,6 @@
 # data within them will be kept sorted.
 
 owners:
-- msbarth@linux.ibm.com
 - spinler@us.ibm.com
 
 reviewers:
@@ -45,9 +44,6 @@
 - name: B.J. Wyman
   email: bjwyman@gmail.com
   discord: bjwyman
-- name: Matthew Barth
-  email: msbarth@linux.ibm.com
-  discord: msbarth
 - name: Matt Spinler
   email: spinler@us.ibm.com
   discord: mspinler