ci: remove unused integration test files

tools/ci/integration_test/KnownIssues

@@ -1,12 +0,0 @@
-# CI
-ESP32.BLUEDROID_GAP_03003
-ESP32.NIMBLE_GAP_11002
-ESP32.NIMBLE_GAP_14007
-
-ESP32C3.NIMBLE_GAP_14009
-
-ESP32C2.NIMBLE_GAP_03001
-ESP32C2.NIMBLE_GAP_03004
-ESP32C2.BLUEDROID_GAP_23004
-ESP32C2.BLUEDROID_GAP_03001
-ESP32C2.BLUEDROID_GAP_03004

tools/ci/integration_test/README.md

@@ -1,12 +0,0 @@
-# Integration Test Description
-
-## Case Lists
-- WiFi Standard cases for only esp32.
-- BLE Standard cases for esp32 and esp32c3.
-
-## Trigger
-- By labels:
-  - `integration_test[_wifi/ble]`
-- By file changes:
-  - integration test related files
-  - See `patterns-integration_test[_wifi/ble]` in `.gitlab/ci/rules.yml`