Revert "Add test for macro_rules! invoking a proc-macro with capture groups"

This reverts commit 30c00fd26a.

src/test/ui/proc-macro/macro-rules-capture.rs

@@ -1,18 +0,0 @@
-// aux-build: test-macros.rs
-
-extern crate test_macros;
-use test_macros::recollect_attr;
-
-macro_rules! reemit {
-    ($name:ident => $($token:expr)*) => {
-
-        #[recollect_attr]
-        pub fn $name() {
-            $($token)*;
-        }
-    }
-}
-
-reemit! { foo => 45u32.into() } //~ ERROR type annotations
-
-fn main() {}

src/test/ui/proc-macro/macro-rules-capture.stderr

@@ -1,12 +0,0 @@
-error[E0282]: type annotations needed
-  --> $DIR/macro-rules-capture.rs:16:24
-   |
-LL | reemit! { foo => 45u32.into() }
-   |                  ------^^^^--
-   |                  |     |
-   |                  |     cannot infer type for type parameter `T` declared on the trait `Into`
-   |                  this method call resolves to `T`
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0282`.