Revert "List peekable token types in documentation of Peek trait"

This reverts commit 0c90291.

src/ext.rs

@@ -4,6 +4,7 @@ use crate::buffer::Cursor;
 use crate::error::Result;
 use crate::parse::ParseStream;
 use crate::parse::Peek;
+use crate::sealed::lookahead;
 use crate::token::CustomToken;
 use proc_macro2::Ident;
 
@@ -114,8 +115,7 @@ impl CustomToken for private::IdentAny {
  }
 }
 
-#[cfg(not(docsrs))]
-impl crate::sealed::lookahead::Sealed for private::PeekFn {}
+impl lookahead::Sealed for private::PeekFn {}
 
 mod private {
  use proc_macro2::Ident;

src/ident.rs

@@ -1,7 +1,5 @@
 #[cfg(feature = "parsing")]
 use crate::lookahead;
-#[cfg(all(feature = "parsing", docsrs))]
-use crate::lookahead::Peek;
 
 pub use proc_macro2::Ident;
 
@@ -14,11 +12,6 @@ pub_if_not_doc! {
  }
 }
 
-#[cfg(all(feature = "parsing", docsrs))]
-impl Peek for Ident {
- type Token = Self;
-}
-
 macro_rules! ident_from_token {
  ($token:ident) => {
  impl From<Token![$token]> for Ident {

src/lifetime.rs

@@ -120,11 +120,6 @@ pub_if_not_doc! {
  }
 }
 
-#[cfg(all(feature = "parsing", docsrs))]
-impl lookahead::Peek for Lifetime {
- type Token = Self;
-}
-
 #[cfg(feature = "parsing")]
 pub(crate) mod parsing {
  use crate::error::Result;

src/lit.rs

@@ -807,11 +807,6 @@ macro_rules! lit_extra_traits {
  match marker {}
  }
  }
-
- #[cfg(all(feature = "parsing", docsrs))]
- impl lookahead::Peek for $ty {
- type Token = Self;
- }
  };
 }
 
@@ -832,11 +827,6 @@ pub_if_not_doc! {
  }
 }
 
-#[cfg(all(feature = "parsing", docsrs))]
-impl lookahead::Peek for LitBool {
- type Token = Self;
-}
-
 /// The style of a string literal, either plain quoted or a raw string like
 /// `r##"data"##`.
 #[doc(hidden)] // https://github.com/dtolnay/syn/issues/1566
@@ -858,11 +848,6 @@ pub_if_not_doc! {
  }
 }
 
-#[cfg(all(feature = "parsing", docsrs))]
-impl lookahead::Peek for Lit {
- type Token = Self;
-}
-
 #[cfg(feature = "parsing")]
 pub(crate) mod parsing {
  use crate::buffer::Cursor;

src/lookahead.rs

@@ -162,5 +162,4 @@ impl<S> IntoSpans<S> for TokenMarker {
  }
 }
 
-#[cfg(not(docsrs))]
 impl<F: Copy + FnOnce(TokenMarker) -> T, T: Token> Sealed for F {}

src/sealed.rs

@@ -1,11 +1,4 @@
 #[cfg(feature = "parsing")]
 pub(crate) mod lookahead {
- #[cfg(not(docsrs))]
  pub trait Sealed: Copy {}
-
- #[cfg(docsrs)]
- pub trait Sealed {}
-
- #[cfg(docsrs)]
- impl<T> Sealed for T {}
 }

src/token.rs

@@ -264,11 +264,6 @@ macro_rules! define_keywords {
  }
  }
 
- #[cfg(all(feature = "parsing", docsrs))]
- impl crate::lookahead::Peek for $name {
- type Token = Self;
- }
-
  impl std::default::Default for $name {
  fn default() -> Self {
  $name {
@@ -396,11 +391,6 @@ macro_rules! define_punctuation_structs {
  }
  }
 
- #[cfg(all(feature = "parsing", docsrs))]
- impl crate::lookahead::Peek for $name {
- type Token = Self;
- }
-
  impl std::default::Default for $name {
  fn default() -> Self {
  $name {
@@ -510,11 +500,6 @@ macro_rules! define_delimiters {
  }
  }
 
- #[cfg(all(feature = "parsing", docsrs))]
- impl crate::lookahead::Peek for $name {
- type Token = Self;
- }
-
  impl std::default::Default for $name {
  fn default() -> Self {
  $name(Span::call_site())