Drop unit test changes

Author: Haydend

.gitignore

@@ -8,7 +8,6 @@ stub_nvm_data
 
 telink_tools
 silabs_tools
-test_tools
 
 __pycache__
 *.pyc

Makefile

@@ -79,9 +79,6 @@ tools/%:
 board/%:
 	$(MAKE) -f board.mk $*
 
-unittest/%:
-	$(MAKE) -C unittest $*
-
 # Pick a Python interpreter for test runs. In some environments (notably WSL
 # minimal installs), `python` may be missing while `python3` exists.
 PYTHON ?= $(shell command -v python >/dev/null 2>&1 && echo python || echo python3)