Remove clippy from Travis for now

It breaks the build too often, need to find a way to run it without
stopping the whole build.

Author: GabrielMajeri

.travis.yml

@@ -14,8 +14,6 @@ install:
   - cargo -V
   # Required by cargo-xbuild
   - rustup component add rust-src
-  # Required by cargo-xclippy
-  - rustup component add clippy --toolchain=nightly || cargo install --git https://github.com/rust-lang/rust-clippy/ --force clippy
   # For checking the code's formatting
   - rustup component add rustfmt
   # Try installing cargo-xbuild if it's not already installed
@@ -45,7 +43,6 @@ script:
   - cd uefi-test-runner
   # Check that formatting is OK
   - cargo fmt --all -- --check
-  - ./build.py clippy
   - ./build.py run --headless
 
 cache: