Some small cleanups (#366)

* No need for version deps in dev-deps

These are all internal so we can drop the version

* Remove wasm-bindgen-cli's parity-wasm dep

No longer needed

* Tweak file hierarchy in webidl tests

Use Cargo's conventions to avoid the need to define `[[test]]` sections

* Remove unused imports

crates/cli/Cargo.toml

@@ -15,7 +15,6 @@ information see https://github.com/alexcrichton/wasm-bindgen.
 [dependencies]
 docopt = "0.8"
 failure = "0.1"
-parity-wasm = "0.28"
 serde = "1.0"
 serde_derive = "1.0"
 wasm-bindgen-cli-support = { path = "../cli-support", version = "=0.2.11" }

crates/cli/src/bin/wasm2es6js.rs

@@ -2,7 +2,6 @@
 extern crate serde_derive;
 extern crate docopt;
 extern crate failure;
-extern crate parity_wasm;
 extern crate wasm_bindgen_cli_support;
 
 use std::fs::File;

crates/webidl/Cargo.toml

@@ -3,19 +3,11 @@ name = "wasm-bindgen-webidl"
 version = "0.2.11"
 authors = ["Nick Fitzgerald <fitzgen@gmail.com>"]
 
-[[test]]
-name = "webidl-all"
-path = "tests/all/lib.rs"
-
-[[test]]
-name = "webidl-expected"
-path = "tests/expected/lib.rs"
-
 [dev-dependencies]
 diff = "0.1.11"
 env_logger = "0.5.10"
-wasm-bindgen = { version = "=0.2.11", path = "../..", default-features = false }
-wasm-bindgen-backend = { version = "=0.2.11", path = "../backend", features = ["extra-traits"] }
+wasm-bindgen = { path = "../..", default-features = false }
+wasm-bindgen-backend = { path = "../backend", features = ["extra-traits"] }
 
 [dependencies]
 failure = "0.1"

tests/all/imports.rs

@@ -1,6 +1,3 @@
-use std::fs::File;
-use std::io::Read;
-
 use super::project;
 
 #[test]