Clean up rust_test_host TEST_MAPPING after default update am: 798305ad56 am: 7dc4e4cf1b

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/lock_api/+/1584205

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7d8fe913e4ead9d5493cd634d14c624aca81d9c2
diff --git a/TEST_MAPPING b/TEST_MAPPING
index dd4a716..738f5ec 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,10 +2,6 @@
 {
   "presubmit": [
     {
-      "host": true,
-      "name": "lock_api_host_test_src_lib"
-    },
-    {
       "name": "lock_api_device_test_src_lib"
     }
   ]