Remove useless sentence, no team use Git instead of Transifex now

wiki/src/contribute/release_process.mdwn

@@ -436,10 +436,7 @@ Call for translation
 
 If at freeze time, send a call for translations to tails-l10n, making it clear what
 Git branch the translations must be based on, and what are the
-priorities. Also, add a few words to remember the translation teams
-using Git that they should regularly contact Transifex translators,
-as detailed on the [[documentation for
-translators|contribute/how/translate]].
+priorities.
 
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