Merge pull request #581 from nightscout/update-codeowners

Update CODEOWNERS: Add @marv-out and remove inactive reviewers/owners

.github/CODEOWNERS

@@ -1,2 +1 @@
-*    @dnzxy @bjornoleh @MikePlante1 @aug0211 @AndreasStokholm @Sjoerd-Bo3 @t1dude
-*.js @dnzxy @bjornoleh @MikePlante1 @aug0211 @AndreasStokholm @Sjoerd-Bo3 @t1dude @jeremystorring
+*    @dnzxy @bjornoleh @MikePlante1 @AndreasStokholm @Sjoerd-Bo3 @t1dude @marv-out