message: docs(server): remove extraneous references to HTTP/2 from HTTP/1 builder docs
  Refs:
diff: @@ -240,8 +240,6 @@ 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 Self {
  self.h1_title_case_headers = enabled;
  @@ -258,8 +256,6 @@ 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 Self {
  self.h1_preserve_header_case = enabled;
  