i18n: fix duplicate entries after fixing odd space before ? in "Don't have an account ?"

Dropping the odd spaces in 462064bd9489 gave some duplicate translation strings
... but there are no actual conflicting translations, so it can be resolved
"trivially".

kallithea/i18n/el/LC_MESSAGES/kallithea.po

@@ -2702,9 +2702,6 b' msgstr "\xce\xa3\xcf\x85\xce\xbd\xce\xb4\xce\xb5\xce\xb8\xce\xb5\xce\xaf\xcf\x84\xce\xb5 \xcf\x83\xcf\x84\xce\xbf \xce\xbb\xce\xbf\xce\xb3\xce\xb1\xcf\x81\xce\xb9\xce\xb1\xcf\x83\xce\xbc\xcf\x8c \xcf\x83\xce\xb1\xcf\x82"'
 msgid "Forgot password?"
 msgstr "Ξεχάσατε τον κωδικό πρόσβασης;"
 
-msgid "Don't have an account?"
-msgstr "Δεν έχετε λογαριασμό;"
-
 msgid "Log Out"
 msgstr "Αποσύνδεση"
 

kallithea/i18n/fr/LC_MESSAGES/kallithea.po

@@ -1323,9 +1323,6 b' msgstr "Rester connect\xc3\xa9 apr\xc3\xa8s un red\xc3\xa9marrage du navigateur"'
 msgid "Forgot your password?"
 msgstr "Mot de passe oublié?"
 
-msgid "Don't have an account?"
-msgstr "Vous n’avez pas de compte?"
-
 msgid "Sign In"
 msgstr "Connexion"
 

kallithea/i18n/ru/LC_MESSAGES/kallithea.po

@@ -2687,9 +2687,6 b' msgstr "\xd0\x90\xd0\xb2\xd1\x82\xd0\xbe\xd1\x80\xd0\xb8\xd0\xb7\xd0\xbe\xd0\xb2\xd0\xb0\xd1\x82\xd1\x8c\xd1\x81\xd1\x8f"'
 msgid "Forgot password?"
 msgstr "Забыли пароль?"
 
-msgid "Don't have an account?"
-msgstr "Нет аккаунта?"
-
 msgid "Log Out"
 msgstr "Выход"