tcwg-llvmbot monitor: Remove clang-native-arm-lnt-perf

And the old Linaro copy of it that was hanging around.

https://linaro.atlassian.net/browse/LLVM-715 is the plan to replace
this eventually.

Change-Id: Ic0e014ca9f00e2458a0bc2e1196dba87f2f68e16
diff --git a/monitor/linaro.json b/monitor/linaro.json
index f17e089..bae8852 100644
--- a/monitor/linaro.json
+++ b/monitor/linaro.json
@@ -85,12 +85,6 @@
     "build_url": "builds",
     "builders": [
       {
-        "name": "Benchmarking",
-        "bots": [
-          { "name": "clang-native-arm-lnt-perf" }
-        ]
-      },
-      {
         "name": "LLDB",
         "bots": [
           { "name": "lldb-aarch64-ubuntu" }
@@ -99,26 +93,6 @@
     ]
   },
   {
-    "name": "Linaro Lab",
-    "base_url": "http://buildmaster.tcwglab.linaro.org",
-    "builder_url": "builders",
-    "build_url": "builds",
-    "ignore" : true,
-    "builders": [
-      {
-        "name": "Benchmarking",
-        "bots": [
-          { "name": "clang-native-arm-lnt-perf", "ignore": true }
-        ]
-      },
-      {
-        "name": "Experimental",
-        "bots": [
-        ]
-      }
-    ]
-  },
-  {
     "name": "Buildkite",
     "base_url": "https://www.buildkite.com",
     "buildkite_org": "llvm-project",