Remove libtorch from travis build

Author: alex-epp

.travis.yml

@@ -23,17 +23,13 @@ install:
   - chmod +x cmake-3.18.0-Linux-x86_64.sh
   - ./cmake-3.18.0-Linux-x86_64.sh --prefix=$HOME/usr --exclude-subdir --skip-license
   - cmake --version
-  # libtorch (for neural networks)
-  - wget https://download.pytorch.org/libtorch/cpu/libtorch-cxx11-abi-shared-with-deps-1.5.1%2Bcpu.zip
-  - unzip libtorch-cxx11-abi-shared-with-deps-1.5.1+cpu.zip
-
 
 script:
   - mkdir assets && cd assets
   - wget https://github.com/michaeldv/donna_opening_books/raw/master/gm2001.bin
   - cd -
   - mkdir build && cd build
-  - cmake -DCMAKE_PREFIX_PATH="$(pwd)/../libtorch" -DCMAKE_BUILD_TYPE=Release ..
+  - cmake -DCMAKE_BUILD_TYPE=Release ..
   - make all
   - cd tests/engine; ./engine_tests -d yes; cd -
   - cd tests/backend; ./backend_tests -d yes; cd -