[Core] use `keycode_string` in unit tests (#25042)

* tests: use keycode_string feature

With a proper keycode to string implementation in qmk there is no need
to use the unit tests only implementation anymore.

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

* tests: remove keycode_util feature

This feature is no longer used as we switched the tests to the
keycode string implementation.

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

1 files changed, 0 insertions, 2 deletions

diff --git a/builddefs/build_full_test.mk b/builddefs/build_full_test.mk
index 5cae327c6c..82bb9387a6 100644
--- a/builddefs/build_full_test.mk
+++ b/builddefs/build_full_test.mk
@@ -25,8 +25,6 @@ $(TEST_OUTPUT)_SRC := \
         tests/test_common/test_driver.cpp \
         tests/test_common/keyboard_report_util.cpp \
         tests/test_common/mouse_report_util.cpp \
-        tests/test_common/keycode_util.cpp \
-        tests/test_common/keycode_table.cpp \
         tests/test_common/test_fixture.cpp \
         tests/test_common/test_keymap_key.cpp \
         tests/test_common/test_logger.cpp \