Remove gpio dispatch macro-defining proc macro (#2069)

* Keep a single PinType trait

* Merge impl blocks

* Deduplicate usb pad workaround

* Deduplicate some bit manipulation

* Remove gpio dispatch proc macro

* Inline PinType into GpioProperties

esp-hal-procmacros/src/lib.rs

@@ -52,8 +52,6 @@ use proc_macro::TokenStream;
 
 #[cfg(feature = "embassy")]
 mod embassy;
-#[cfg(feature = "enum-dispatch")]
-mod enum_dispatch;
 #[cfg(feature = "interrupt")]
 mod interrupt;
 #[cfg(any(
@@ -339,37 +337,6 @@ pub fn handler(args: TokenStream, input: TokenStream) -> TokenStream {
     .into()
 }
 
-/// Create an enum for erased GPIO pins, using the enum-dispatch pattern
-///
-/// Only used internally
-#[cfg(feature = "enum-dispatch")]
-#[proc_macro]
-pub fn make_gpio_enum_dispatch_macro(input: TokenStream) -> TokenStream {
-    use quote::{format_ident, quote};
-
-    use self::enum_dispatch::{build_match_arms, MakeGpioEnumDispatchMacro};
-
-    let input = syn::parse_macro_input!(input as MakeGpioEnumDispatchMacro);
-
-    let macro_name = format_ident!("{}", input.name);
-    let arms = build_match_arms(input);
-
-    quote! {
-        #[doc(hidden)]
-        #[macro_export]
-        macro_rules! #macro_name {
-            ($m:ident, $target:ident, $body:block) => {
-                match $m {
-                    #(#arms)*
-                }
-            }
-        }
-
-        pub(crate) use #macro_name;
-    }
-    .into()
-}
-
 /// Load code to be run on the LP/ULP core.
 ///
 /// ## Example