llvmbot monitor: Remove flang-aarch64-latest-clang

This will return shortly as flang-aarch64-libcxx.

Change-Id: I77fd0b90df7491b3a4a6a69f9e9dfa7ec1c31fc7
diff --git a/monitor/linaro.json b/monitor/linaro.json
index 35ee09b..8a5cd40 100644
--- a/monitor/linaro.json
+++ b/monitor/linaro.json
@@ -71,7 +71,6 @@
           { "name": "flang-aarch64-out-of-tree" },
           { "name": "flang-aarch64-release" },
           { "name": "flang-aarch64-debug-reverse-iteration" },
-          { "name": "flang-aarch64-latest-clang" },
           { "name": "flang-aarch64-rel-assert" },
           { "name": "flang-aarch64-latest-gcc" }
         ]