.mailmap: colapse duplicates for Timothy Arceri

Signed-off-by: Andres Gomez <agomez@igalia.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <!8837>

.mailmap

@@ -585,13 +585,12 @@ Tilman Sauerbeck <tilman@code-monkey.de> <tilman@freedesktop.org>
 
 Tim Wiederhake <twied@gmx.net>
 
-Timothy Arceri <timothy.arceri@collabora.com> <t_arceri@yahoo.com.au>
-Timothy Arceri <timothy.arceri@collabora.com> Timothy <t_arceri@yahoo.com.au>
-
 Timo Aaltonen <tjaalton@debian.org> <tjaalton@cc.hut.fi>
 
 Timothy Arceri <tarceri@itsqueeze.com> <tarceri@localhost.localdomain>
 Timothy Arceri <tarceri@itsqueeze.com> <timothy.arceri@collabora.com>
+Timothy Arceri <tarceri@itsqueeze.com> <t_arceri@yahoo.com.au>
+Timothy Arceri <tarceri@itsqueeze.com> Timothy <t_arceri@yahoo.com.au>
 
 Tom Fogal <tfogal@alumni.unh.edu> <tfogal@sci.utah.edu>