Remove .travis.yml

.travis.yml

-language: c
-sudo: required
-matrix:
-  include:
-    # Try to emulate a C89 compiler on a POSIX system by disabling as many
-    # GNU extensions as possible.
-    # TODO: Build and test Python bindings.
-    - compiler: gcc
-      env: CONFIG="--without-python"
-           CFLAGS="-O2 -std=c89 -D_POSIX_C_SOURCE=200112L -Werror -Wno-error=array-bounds"
-    # clang with AddressSanitizer and UndefinedBehaviorSanitizer.
-    - compiler: clang
-      dist: xenial
-      env: CONFIG="--without-python"
-           CFLAGS="-O2 -g -fno-omit-frame-pointer -fsanitize=address,undefined -fno-sanitize-recover=all -Werror -Wno-error=cast-align"
-           UBSAN_OPTIONS=print_stacktrace=1
-    # clang with MemorySanitizer.
-    - compiler: clang
-      dist: xenial
-      env: CONFIG="--without-python --without-zlib --without-lzma --without-crypto"
-           CFLAGS="-O2 -g -fno-omit-frame-pointer -fsanitize=memory -Werror -Wno-error=cast-align"
-script:
-- |
-    git clone --depth 1 https://gitlab.gnome.org/GNOME/libxml2.git
-    cd libxml2
-    sh autogen.sh $CONFIG
-    make -j2
-    cd ..
-    sh autogen.sh $CONFIG --with-libxml-src=libxml2
-    # Don't run make in "doc" directory
-    for target in libxslt libexslt xsltproc python tests/plugins; do
-        make -j2 -C $target V=1
-    done
-    make -j2 -C tests/fuzz testTargets
-    make tests | tee test.log
-    ! grep -qv '^## Running' test.log
-git:
-  depth: 10