Remove dimensions subarray from internal iOS bots config

This is needed to skip calling trigger_multiple_dimensions.py script
as it does not support custom swarming servers.

Bug: webrtc:10047
Change-Id: Ie8632313bd936dec40854259ffb2a0e2b7b2c177
Reviewed-on: https://webrtc-review.googlesource.com/c/118690
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Commit-Queue: Artem Titarenko <artit@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26347}
diff --git a/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json b/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json
index 9fa118d..e4f51d2 100644
--- a/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json
+++ b/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json
@@ -23,12 +23,7 @@
       "include": "real_device_tests.json",
       "device type": "iPhone 6s",
       "os": "11.4.1",
-      "dimensions": [
-        {
-          "os": "Mac",
-          "pool": "chrome.tests"
-        }
-      ]
+      "pool": "chrome.tests"
     }
   ]
 }
diff --git a/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json b/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json
index e068a09..8937f77 100644
--- a/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json
+++ b/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json
@@ -24,12 +24,7 @@
       "include": "real_device_tests.json",
       "device type": "iPhone 6s",
       "os": "11.4.1",
-      "dimensions": [
-        {
-          "os": "Mac",
-          "pool": "chrome.tests"
-        }
-      ]
+      "pool": "chrome.tests"
     }
   ],
   "expiration_time": 3600
diff --git a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_dbg.json b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_dbg.json
index 55107cb..edd53bf 100644
--- a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_dbg.json
+++ b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_dbg.json
@@ -23,12 +23,7 @@
       "include": "real_device_tests.json",
       "device type": "iPhone 6s",
       "os": "10.3.3",
-      "dimensions": [
-        {
-          "os": "Mac",
-          "pool": "chrome.tests"
-        }
-      ]
+      "pool": "chrome.tests"
     }
   ]
 }
diff --git a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json
index 2642472..e23d552 100644
--- a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json
+++ b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json
@@ -24,12 +24,7 @@
       "include": "real_device_tests.json",
       "device type": "iPhone 6s",
       "os": "10.3.3",
-      "dimensions": [
-        {
-          "os": "Mac",
-          "pool": "chrome.tests"
-        }
-      ]
+      "pool": "chrome.tests"
     }
   ],
   "expiration_time": 3600