selftests/checkall: revert silecing of inspekt lint checks

On b97a4cfa, the (noisy) output produced by the inspekt lint (and
underline pylint) was silenced by having it redirected to a file.

This seems to no longer be necessary.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

selftests/checkall

@@ -155,11 +155,7 @@ results_dir_content() {
 }
 
 [ "$SKIP_RESULTSDIR_CHECK" ] || RESULTS_DIR_CONTENT="$(ls $RESULTS_DIR 2> /dev/null)"
-if [ "$TRAVIS" == "true" ]; then
-    run_rc lint 'RESULT=$(mktemp); inspekt lint --exclude=.git --enable W0101,W0102,W0404,W0611,W0612,W0622 &>$RESULT || { cat $RESULT; rm $RESULT; exit -1; }; rm $RESULT'
-else
-    run_rc lint 'inspekt lint --exclude=.git --enable W0101,W0102,W0404,W0611,W0612,W0622'
-fi
+run_rc lint 'inspekt lint --exclude=.git --enable W0101,W0102,W0404,W0611,W0612,W0622'
 # Skip checking test_utils_cpu.py due to inspektor bug
 run_rc indent 'inspekt indent --exclude=.git,selftests/unit/test_utils_cpu.py'
 run_rc style 'inspekt style --exclude=.git --disable E501,E265,W601,E402,E722'