Update notes for submitted changes

* Remove unused API problem filters
* Remove reftree and ketch
* LsRemote: suppress warning for non-externalized string
* LooseObjects: fix formatting

3f/c8da3a3ca875fba96de71f38b257444322415e

@@ -0,0 +1,7 @@
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Tue, 15 Dec 2020 17:10:58 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/173793
+Project: jgit/jgit
+Branch: refs/heads/master

5d/fe4c096e9f4defed3f5de4bf2c8728b61f4708

@@ -0,0 +1,7 @@
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Tue, 15 Dec 2020 17:10:58 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/173795
+Project: jgit/jgit
+Branch: refs/heads/master

73/86f73bb0a5754f0b1dfc38aae37d68461a8cd8

@@ -0,0 +1,8 @@
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Code-Review+1: Terry Parker <tparker@google.com>
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Tue, 15 Dec 2020 17:10:58 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/152841
+Project: jgit/jgit
+Branch: refs/heads/master

85/48cb4e51894d5e10a06e82921dd1e1f9c6ea66

@@ -0,0 +1,7 @@
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Tue, 15 Dec 2020 17:10:58 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/173794
+Project: jgit/jgit
+Branch: refs/heads/master