Travis: remove littlefs generic tests

They do not add any value as littlefs library contains own tests, we do not need to duplicate them in Mbed OS.
We test integration with our libraries.

Author: 0xc0170

.travis.yml

@@ -264,65 +264,7 @@ matrix:
 
     ### Extended Tests ###
     - &extended-vm
-      stage: "Extended"
-      name: "littlefs"
-      env: NAME=littlefs LITTLEFS=storage/filesystem/littlefs
-      language: python
-      python: 3.7
-      install:
-        # Install gcc
-        - source_pkg gcc
-        - arm-none-eabi-gcc --version
-        # Install python modules
-        - python -m pip install --upgrade pip==18.1
-        - python -m pip install --upgrade setuptools==40.4.3
-        - pip install -r requirements.txt
-        - pip list --verbose
-        # Install test-specific packages
-        - source_pkg fuse
-        - source_pkg libfuse-dev
-        - fusermount --version
-      before_script:
-        # Setup and patch littlefs-fuse
-        - git clone https://github.com/armmbed/littlefs-fuse littlefs_fuse
-        - git -C littlefs_fuse checkout 3f1ed6e37799e49e3710830dc6abb926d5503cf2
-        - echo '*' > littlefs_fuse/.mbedignore
-        - rm -rf littlefs_fuse/littlefs/*
-        - cp -r $(git ls-tree --name-only HEAD ${LITTLEFS}/littlefs/) littlefs_fuse/littlefs
-        # Create file-backed disk
-        - mkdir MOUNT
-        - sudo chmod a+rw /dev/loop0
-        - dd if=/dev/zero bs=512 count=2048 of=DISK
-        - losetup /dev/loop0 DISK
-        - CFLAGS="-Werror -Wno-format"
-      script:
-        # Run local littlefs tests
-        - make -C${LITTLEFS}/littlefs test QUIET=1
-        # Run local littlefs tests with set of variations
-        - make -C${LITTLEFS}/littlefs test QUIET=1 CFLAGS+="-DLFS_READ_SIZE=64  -DLFS_PROG_SIZE=64"
-        - make -C${LITTLEFS}/littlefs test QUIET=1 CFLAGS+="-DLFS_READ_SIZE=1   -DLFS_PROG_SIZE=1"
-        - make -C${LITTLEFS}/littlefs test QUIET=1 CFLAGS+="-DLFS_READ_SIZE=512 -DLFS_PROG_SIZE=512"
-        - make -C${LITTLEFS}/littlefs test QUIET=1 CFLAGS+="-DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD=2048"
-        - make -C${LITTLEFS}/littlefs clean test QUIET=1 CFLAGS+="-DLFS_NO_INTRINSICS"
-        # Self-hosting littlefs fuzz test with littlefs-fuse
-        - make -Clittlefs_fuse
-        - littlefs_fuse/lfs --format /dev/loop0
-        - littlefs_fuse/lfs /dev/loop0 MOUNT
-        - ls MOUNT
-        - mkdir MOUNT/littlefs
-        - cp -r $(git ls-tree --name-only HEAD ${LITTLEFS}/littlefs/) MOUNT/littlefs
-        - ls MOUNT/littlefs
-        - CFLAGS="-Wno-format" make -CMOUNT/littlefs -B test_dirs test_files QUIET=1
-        # Compile and find the code size with smallest configuration
-        - cd ${TRAVIS_BUILD_DIR}/${LITTLEFS}/littlefs
-        - make clean size
-            CC='arm-none-eabi-gcc -mthumb'
-            OBJ="$(ls lfs*.o | tr '\n' ' ')"
-            CFLAGS+="-DLFS_NO_ASSERT -DLFS_NO_DEBUG -DLFS_NO_WARN -DLFS_NO_ERROR"
-            | tee sizes
-        - ccache -s
-    - <<: extended-pinvalidate
-      stage: "Extended"
+       stage: "Extended"
       name: "pinvalidate"
       env: NAME=pinvalidate
       language: python