Revert "Add TEST_MAPPING"

This reverts commit 9d6e818c6afbe77b8164e1944a6fe842e127f5a2.

Reason for revert: The previous patch broke TestMappingsValidation.testTestSuiteSetting.

Bug: b/254131591
Change-Id: Ie92e423a3706f6898d4a940e3e3ecef08e208fe9
Test: atest TestMappingsValidation
diff --git a/power/TEST_MAPPING b/power/TEST_MAPPING
deleted file mode 100644
index c0963f9..0000000
--- a/power/TEST_MAPPING
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "presubmit": [
-    {
-      "name": "VtsHalPowerTargetTest"
-    }
-  ]
-}