message: docs(client): remove extraneous references to HTTP/2 from HTTP/1 builder docs
  Refs:
diff: @@ -333,8 +333,6 @@ impl Builder {
  /// > of 400 (Bad Request). A proxy MUST remove any such whitespace from a
  /// > response message before forwarding the message downstream.
  ///
  - /// Note that this setting does not affect HTTP/2.
  - ///
  /// Default is false.
  ///
  /// [RFC 7230 Section 3.2.4.]: https://tools.ietf.org/html/rfc7230#section-3.2.4
  @@ -376,8 +374,6 @@ impl Builder {
  /// > obs-fold with one or more SP octets prior to interpreting the field
  /// > value.
  ///
  - /// Note that this setting does not affect HTTP/2.
  - ///
  /// Default is false.
  ///
  /// [RFC 7230 Section 3.2.4.]: https://tools.ietf.org/html/rfc7230#section-3.2.4
  @@ -396,8 +392,6 @@ impl Builder {
  /// name, or does not include a colon at all, the line will be silently ignored
  /// and no error will be reported.
  ///
  - /// Note that this setting does not affect HTTP/2.
  - ///
  /// Default is false.
  pub fn ignore_invalid_headers_in_responses(&mut self, enabled: bool) -> &mut Builder {
  self.h1_parser_config
  @@ -425,8 +419,6 @@ impl Builder {
  /// Set whether HTTP/1 connections will write header names as title case at
  /// the socket level.
  ///
  - /// Note that this setting does not affect HTTP/2.
  - ///
  /// Default is false.
  pub fn title_case_headers(&mut self, enabled: bool) -> &mut Builder {
  self.h1_title_case_headers = enabled;
  @@ -443,8 +435,6 @@ impl Builder {
  /// interact with the original cases. The only effect this can have now is
  /// to forward the cases in a proxy-like fashion.
  ///
  - /// Note that this setting does not affect HTTP/2.
  - ///
  /// Default is false.
  pub fn preserve_header_case(&mut self, enabled: bool) -> &mut Builder {
  self.h1_preserve_header_case = enabled;
  @@ -457,8 +447,6 @@ impl Builder {
  /// ordering in a private extension on the `Response`. It will also look for and use
  /// such an extension in any provided `Request`.
  ///
  - /// Note that this setting does not affect HTTP/2.
  - ///
  /// Default is false.
  #[cfg(feature = "ffi")]
  pub fn preserve_header_order(&mut self, enabled: bool) -> &mut Builder {
  