Remove test mapping file for acloud_test

Not needed anymore.

Exempt-From-Owner-Approval:clean up mapping files
Test: presubmit
Bug: 175408655
Change-Id: Ibc19beb08c85c897e59107ffe1517518634bf311
diff --git a/TEST_MAPPING b/TEST_MAPPING
deleted file mode 100644
index 61a80b2..0000000
--- a/TEST_MAPPING
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "presubmit" : [
-    {
-      "name" : "acloud_test",
-      "host" : true
-    }
-  ]
-}