Remove Travis and Appveyor configuration

.travis.yml

@@ -1,20 +0,0 @@
-language: rust
-rust:
-  - stable
-  - beta
-  - nightly
-cache: cargo
-
-before_script:
-- if [[ "${TRAVIS_RUST_VERSION}" == stable ]]; then
-    rustup component add rustfmt;
-  fi
-
-script:
-- cargo test --all
-- if [[ "${TRAVIS_RUST_VERSION}" == stable ]]; then
-    cd testing && cargo test --features full && cargo fmt -- --check;
-  fi
-- if [[ "${TRAVIS_RUST_VERSION}" == nightly ]]; then
-    cd testing && cargo test --features with-rocket;
-  fi

appveyor.yml

@@ -1,20 +0,0 @@
-environment:
-  matrix:
-  - TARGET: x86_64-pc-windows-msvc
-    OTHER_TARGET: i686-pc-windows-msvc
-    MAKE_TARGETS: test-unit-x86_64-pc-windows-msvc
-
-install:
-  - appveyor-retry appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
-  - rustup-init.exe -y --default-host x86_64-pc-windows-msvc --default-toolchain stable
-  - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
-  - rustup target add %OTHER_TARGET%
-  - rustc -V
-  - cargo -V
-
-clone_depth: 1
-
-build: false
-
-test_script:
-  - cargo test