Remove inline hack

Now that rust-lang/rust#41297 has been closed by rust-lang/rust#43857,
this hack is no longer needed to make the code compile.

src/lib.rs

@@ -274,8 +274,6 @@ pub struct Form {
 }
 
 impl Client {
- // inline to work around https:/rust-lang/rust/issues/41297#issuecomment-312197433
- #[inline]
  fn init(
  mut self,
  params: webdriver::command::NewSessionParameters,
@@ -443,7 +441,6 @@ impl Client {
  )
  }
 
- #[inline]
  fn dup(&self) -> Self {
  Client(self.0.clone())
  }
@@ -456,7 +453,6 @@ impl Client {
  /// Helper for determining what URL endpoint to use for various requests.
  ///
  /// This mapping is essentially that of https://www.w3.org/TR/webdriver/#list-of-endpoints.
- #[inline]
  fn endpoint_for(&self, cmd: &Cmd) -> Result<url::Url, url::ParseError> {
  if let WebDriverCommand::NewSession(..) = *cmd {
  return self.0.wdb.join("/session");
@@ -508,7 +504,6 @@ impl Client {
  /// arguments (if any) into the body.
  ///
  /// [the spec]: https://www.w3.org/TR/webdriver/#list-of-endpoints
- #[inline]
  fn issue_wd_cmd(
  self,
  cmd: WebDriverCommand<webdriver::command::VoidWebDriverExtensionCommand>,
@@ -779,7 +774,6 @@ impl Client {
  ) as Box<Future<Item = _, Error = _>>
  }
 
- #[inline]
  fn current_url_(
  &self,
  ) -> impl Future<Item = (Self, url::Url), Error = error::CmdError> + 'static {
@@ -1087,7 +1081,6 @@ impl Client {
 
  // helpers
 
- #[inline]
  fn by(
  &self,
  locator: webdriver::command::LocatorParameters,
@@ -1104,7 +1097,6 @@ impl Client {
  }
 
  /// Extract the `WebElement` from a `FindElement` or `FindElementElement` command.
- #[inline]
  fn parse_lookup(&self, res: Json) -> Result<webdriver::common::WebElement, error::CmdError> {
  if !res.is_object() {
  return Err(error::CmdError::NotW3C(res));
@@ -1135,7 +1127,6 @@ impl Client {
  Err(error::CmdError::NotW3C(Json::Object(res)))
  }
 
- #[inline]
  fn fixup_elements(&self, args: &mut [Json]) {
  if self.0.legacy {
  for arg in args {