tests: ui: compile-fail: pin_data: fix twice stderr

The nightly compiler improved the error message, removing a strange
error.

Author: BennoLossin

tests/ui/compile-fail/pin_data/twice.stderr

@@ -9,22 +9,6 @@ error[E0119]: conflicting implementations of trait `HasPinData` for type `Foo`
   |
   = note: this error originates in the macro `$crate::__pin_data` which comes from the expansion of the attribute macro `pin_data` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error[E0282]: type annotations needed
- --> tests/ui/compile-fail/pin_data/twice.rs:3:1
-  |
-3 | #[pin_data]
-  | ^^^^^^^^^^^ cannot infer type
-  |
-note: the requirement `_ <: _` appears on the `impl`'s method `__pin_data` but not on the corresponding trait's method
- --> src/__internal.rs
-  |
-  | pub unsafe trait HasPinData {
-  |                  ---------- in this trait
-...
-  |     unsafe fn __pin_data() -> Self::PinData;
-  |               ^^^^^^^^^^ this trait's method doesn't have the requirement `_ <: _`
-  = note: this error originates in the macro `$crate::__pin_data` which comes from the expansion of the attribute macro `pin_data` (in Nightly builds, run with -Z macro-backtrace for more info)
-
 error[E0119]: conflicting implementations of trait `Unpin` for type `Foo`
  --> tests/ui/compile-fail/pin_data/twice.rs:3:1
   |
@@ -35,19 +19,3 @@ error[E0119]: conflicting implementations of trait `Unpin` for type `Foo`
   | conflicting implementation for `Foo`
   |
   = note: this error originates in the macro `$crate::__pin_data` which comes from the expansion of the attribute macro `pin_data` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error[E0282]: type annotations needed
- --> tests/ui/compile-fail/pin_data/twice.rs:3:1
-  |
-3 | #[pin_data]
-  | ^^^^^^^^^^^ cannot infer type
-  |
-note: the requirement `_ <: _` appears on the `impl`'s method `__pin_data` but not on the corresponding trait's method
- --> src/__internal.rs
-  |
-  | pub unsafe trait HasPinData {
-  |                  ---------- in this trait
-...
-  |     unsafe fn __pin_data() -> Self::PinData;
-  |               ^^^^^^^^^^ this trait's method doesn't have the requirement `_ <: _`
-  = note: this error originates in the macro `$crate::__pin_data` which comes from the expansion of the attribute macro `pin_data` (in Nightly builds, run with -Z macro-backtrace for more info)