TBR: todos: Remove .v23 from all .gitignore files.

MultiPart: 22/25

Change-Id: I3dcc4d7a9c974e4b389ef5e5ea7158d45611e34d
diff --git a/.gitignore b/.gitignore
index e39b0d5..a619a9f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,4 @@
 /.jiri
-#TODO(nlacasse): Get rid of .v23 below once v23->jiri transition is complete.
-/.v23
 /bin
 /creds
 /node_modules