reproducible scheduler: schedule less (old) packages

bin/reproducible_scheduler.py

@@ -66,8 +66,8 @@ LIMITS = {
     },
     'old': {
         'amd64': {
-            'testing': {1: (300, 50), 2: (400, 62.5), '*': 0},
-            'unstable': {1: (300, 75), 2: (400, 12.5), '*': 0},
+            'testing': {1: (300, 25), 2: (400, 30), '*': 0},
+            'unstable': {1: (300, 50), 2: (400, 60), '*': 0},
             'experimental': {1: (300, 3.5), 2: (400, 2.5), '*': 0},
         },
         'armhf': {