Travis: remove status functionality

Unfortunately, we need to remove status functionality as it exposes an information
it should rather not. There is no other way we can do it in the pull request coming
from forks (most of our PRs are from forks). It is better if we use pass/failure what
Travis provides. The information are in the logs. It should always print the status info at
the very end. A test should have "echo Failed with a reason...."

.travis.yml

@@ -33,13 +33,6 @@ cache:
 
 before_install:
   - source tools/test/travis-ci/functions.sh
-  - set_status "pending" "Test started."
-
-after_success:
-  - set_status "success" "Success!"
-
-after_failure:
-  - set_status "failure" "Test failed."
 
 
 matrix:
@@ -86,8 +79,6 @@ matrix:
               | while read file; do cp --parents "${file}" SCANCODE_NEW_FILES; done
         - scancode -l --json-pp scancode_new_files.json SCANCODE_NEW_FILES
         - python ./tools/test/travis-ci/scancode-evaluate.py -f scancode_new_files.json || true
-      after_success:
-        - python ./tools/test/travis-ci/scancode-evaluate.py -f scancode.json
         - cat scancode-evaluate.log
         - COUNT=$(cat scancode-evaluate.log | grep 'File:' | wc -l)
         - python ./tools/test/travis-ci/scancode-evaluate.py -f scancode_new_files.json
@@ -96,22 +87,13 @@ matrix:
         - |
           if [ $COUNT == 0 ] && [ $COUNT_NEW_FILES == 0 ]; then
               echo "License check OK";
-              STATUSM="All licenses OK";
-              set_status "success" "$STATUSM";
             elif [ $COUNT_NEW_FILES != 0 ]; then
-              echo "License check failed, files with the license issues found";
+              echo "License check failed, new files with the license issues found";
-              STATUSM="Needs review, license issues in modified files: ${COUNT}, new files: ${COUNT_NEW_FILES}";
-              set_status "failure" "$STATUSM";
               false;
             else
               echo "License check failed, please review license issues found in modified files";
-              STATUSM="Needs review, ${COUNT} license issues found";
-              set_status "success" "$STATUSM";
-              false;
           fi
 
-
-
     - <<: *basic-vm
       name: "include check"
       env: NAME=include_check
@@ -305,20 +287,6 @@ matrix:
         # Run profiling tests
         - make -C ${EVENTS}/tests/unit prof | tee prof
         - ccache -s
-      after_success:
-        # Update status, comparing with master if possible.
-        - |
-          CURR=$(grep -o '[0-9]\+ cycles' prof | awk '{sum += $1} END {print sum}')
-          PREV=$(curl -u "${MBED_BOT}" https://api.github.com/repos/${TRAVIS_REPO_SLUG}/status/master \
-              | jq -re "select(.sha != \"${TRAVIS_COMMIT}\")
-                  | .statuses[] | select(.context == \"travis-ci/${NAME}\").description
-                  | capture(\"runtime is (?<runtime>[0-9]+)\").runtime" \
-              || echo 0)
-
-          delta=""
-          [ "${PREV}" -ne 0 ] && delta="($(printf "%+d" "$(( ${CURR} - ${PREV} ))" cycles)"
-
-          set_status "success" "Success! Runtime is ${CURR} cycles. ${delta}"
 
     - <<: *extended-vm
       name: "littlefs"
@@ -379,17 +347,3 @@ matrix:
             CFLAGS+="-DLFS_NO_ASSERT -DLFS_NO_DEBUG -DLFS_NO_WARN -DLFS_NO_ERROR"
             | tee sizes
         - ccache -s
-      after_success:
-        # Update status, comparing with master if possible.
-        - |
-          CURR=$(tail -n1 sizes | awk '{print $1}')
-          PREV=$(curl -u "${MBED_BOT}" https://api.github.com/repos/${TRAVIS_REPO_SLUG}/status/master \
-              | jq -re "select(.sha != \"${TRAVIS_COMMIT}\")
-                  | .statuses[] | select(.context == \"travis-ci/${NAME}\").description
-                  | capture(\"code size is (?<size>[0-9]+)\").size" \
-              || echo 0)
-
-          delta=""
-          [ "${PREV}" -ne 0 ] && delta="($(printf "%+0.2f%%" "$(<<< "100 * ((${CURR} - ${PREV})/${PREV})" bc -l)"))"
-
-          set_status "success" "Success! Code size is ${CURR}B. ${delta}"