Revert "Set all urgencies to 10 days"

No longer necessary during the freeze, since they'll need an unblock
anyway, at which point age can be adjusted as well if necessary.

This reverts commit 6891fa39f6.

Signed-off-by: Julien Cristau <jcristau@debian.org>

britney.conf

@@ -29,12 +29,11 @@ BREAK_ARCHES      =
 NEW_ARCHES        =
 
 # priorities and delays
-# All 10 for Jessie, normally 10/5/2/0/0
 MINDAYS_LOW       = 10
-MINDAYS_MEDIUM    = 10
-MINDAYS_HIGH      = 10
-MINDAYS_CRITICAL  = 10
-MINDAYS_EMERGENCY = 10
+MINDAYS_MEDIUM    = 5
+MINDAYS_HIGH      = 2
+MINDAYS_CRITICAL  = 0
+MINDAYS_EMERGENCY = 0
 DEFAULT_URGENCY   = medium
 
 # hint permissions