Clean up rust_test_host TEST_MAPPING after default update am: 84fc652c2d

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/unicode-width/+/1584386

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Iec933166c3ae8debdc311b1725dc5ea01cf1a839
diff --git a/TEST_MAPPING b/TEST_MAPPING
index b303d8f..e61165f 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,17 +2,9 @@
 {
   "presubmit": [
     {
-      "host": true,
-      "name": "unicode-width_host_test_src_lib"
-    },
-    {
       "name": "unicode-width_device_test_src_lib"
     },
     {
-      "host": true,
-      "name": "libsqlite3-sys_host_test_src_lib"
-    },
-    {
       "name": "libsqlite3-sys_device_test_src_lib"
     }
   ]