TBR: js.syncbase: Remove .v23 from all .gitignore files.

MultiPart: 10/25

Change-Id: Icb5225dd865662861631c15f7d89408da6361289
diff --git a/.gitignore b/.gitignore
index 6bebbc4..97e494f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,6 @@
 /.jiri
-#TODO(nlacasse): Get rid of .v23 below once v23->jiri transition is complete.
 /docs
 /go
 /node_modules
 /tmp
 /npm-debug.log
-
-/.v23