selftests: Remove KSFT_TAP_LEVEL

Since sub-testing can now be detected by indentation level, this removes
KSFT_TAP_LEVEL so that subtests report their TAP header for later parsing.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/Makefile

@@ -86,12 +86,6 @@ else
 	endif
 endif
 
-# KSFT_TAP_LEVEL is used from KSFT framework to prevent nested TAP header
-# printing from tests. Applicable to run_tests case where run_tests adds
-# TAP header prior running tests and when a test program invokes another
-# with system() call. Export it here to cover override RUN_TESTS defines.
-export KSFT_TAP_LEVEL=`echo 1`
-
 # Prepare for headers install
 top_srcdir ?= ../../..
 include $(top_srcdir)/scripts/subarch.include

tools/testing/selftests/kselftest/runner.sh

@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: GPL-2.0
 #
 # Runs a set of tests in a given subdirectory.
-export KSFT_TAP_LEVEL=1
 export skip_rc=4
 export logfile=/dev/stdout
 export per_test_logging=