Simplify .travis.yml

.travis.yml

@@ -1,27 +1,12 @@
 language: rust
+script: cargo test --all-features --all
 
 jobs:
   include:
   - rust: 1.24.0
-    install:
-    # --precise requires Cargo.lock to already exist
-    - cargo update
-    # getopts is only used in tests. Its versions 0.2.16+ don’t build on 1.17.0
-    - cargo update -p getopts --precise 0.2.15
-
-    - cargo update -p unicode-normalization --precise 0.1.5
-
-    script: cargo test --all-features -p url -p idna -p percent-encoding -p url_serde -p data-url
-
   - rust: stable
-    script: cargo test --all-features --all
-
   - rust: beta
-    script: cargo test --all-features --all
-
   - rust: nightly
-    script: cargo test --all-features --all
-
   - rust: nightly
     env: TARGET=WASM32  # For job list UI
     install: rustup target add wasm32-unknown-unknown