Delete the builders on master.chromium.swarm that have been offline for months.

masters/master.chromium.swarm/slaves.cfg

Index: masters/master.chromium.swarm/slaves.cfg
diff --git a/masters/master.chromium.swarm/slaves.cfg b/masters/master.chromium.swarm/slaves.cfg
index 5d1adc3b4450a8fabd96d6f0d269d4040d6acc1f..f3cb584d92294eb47ec582bcdcac03a6bb29b797 100644
--- a/masters/master.chromium.swarm/slaves.cfg
+++ b/masters/master.chromium.swarm/slaves.cfg
@@ -38,14 +38,6 @@ real_slaves = [
   },
   {
     'master': 'ChromiumSwarm',
-    'builder': 'Windows Swarm',
-    'hostname': 'win17-c1',
-    'os': 'win',
-    'version': 'win7',
-    'bits': '64',
-  },
-  {
-    'master': 'ChromiumSwarm',
     'builder': 'Mac Swarm',
     'hostname': 'build184-m1',
     'os': 'mac',
@@ -54,44 +46,12 @@ real_slaves = [
   },
   {
     'master': 'ChromiumSwarm',
-    'builder': 'Windows deterministic',
-    'hostname': 'win12-c1',
-    'os': 'win',
-    'version': 'win7',
-    'bits': '64',
-  },
-  {
-    'master': 'ChromiumSwarm',
-    'builder': 'Windows Clang deterministic',
-    'hostname': 'win13-c1',
-    'os': 'win',
-    'version': 'win7',
-    'bits': '64',
-  },
-  {
-    'master': 'ChromiumSwarm',
     'builder': 'Linux deterministic',
     'hostname': 'slave0-c1',
     'os': 'linux',
     'version': 'lucid',
     'bits': '64',
   },
-  {
-    'master': 'ChromiumSwarm',
-    'builder': 'Mac deterministic',
-    'hostname': 'vm610-m1',
-    'os': 'mac',
-    'version': '10.9',
-    'bits': '64',
-  },
-  {
-    'master': 'ChromiumSwarm',
-    'builder': 'Android deterministic',
-    'hostname': 'slave1-c1',
-    'os': 'linux',
-    'version': 'lucid',
-    'bits': '64',
-  },
 ]
 
 slaves = heartbeat_slaves + real_slaves