Remove ancient TODO file

Change-Id: I72343901c730cc7c573a784015453c3f50976df2
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/TODO.txt

@@ -1,17 +0,0 @@
-Commands:
- - P3:
-        - allow to use external viewer instead of greenhouse one
-          as these have more functionality usually
-
-GUI:
- - Better diff view
- - Commit action View
-        - Able to add further files to commit (list of modified/untracked files)
- - use List for Log (and allow 10+ entries)
-Backend:
- - Don't use forked processes, instead find a library connection like libgit-thin
-        - http://repo.or.cz/w/git/libgit-gsoc.git
- - apply to SCM Manager in Greenhouse, currently it's mostly independent
-
-Suggestions:
- - Bjorn: Use a "Summary" Lineedit in the commit dialog to make commits look nicer on gitweb or such.