Add #![allow(dyn_drop)] to test cases with dyn Drop in them

These are all testing corner-cases in the compiler.
Adding a new warning broke these test cases, but --cap-lints stops
it from actually breaking things in production.

Author: notriddle

src/test/ui/dyn-keyword/issue-56327-dyn-trait-in-macro-is-okay.rs

@@ -10,6 +10,7 @@
 // anything.
 
 #![deny(rust_2018_compatibility)]
+#![allow(dyn_drop)]
 
 macro_rules! foo {
     () => {

src/test/ui/traits/object/issue-33140-traitobject-crate.rs

@@ -1,6 +1,7 @@
 // check-pass
 
 #![warn(order_dependent_trait_objects)]
+#![allow(dyn_drop)]
 
 // Check that traitobject 0.1.0 compiles
 

src/test/ui/traits/object/issue-33140-traitobject-crate.stderr

@@ -1,5 +1,5 @@
 warning: conflicting implementations of trait `Trait` for type `(dyn std::marker::Send + std::marker::Sync + 'static)`: (E0119)
-  --> $DIR/issue-33140-traitobject-crate.rs:85:1
+  --> $DIR/issue-33140-traitobject-crate.rs:86:1
    |
 LL | unsafe impl Trait for dyn (::std::marker::Send) + Sync { }
    | ------------------------------------------------------ first implementation here
@@ -15,7 +15,7 @@ LL | #![warn(order_dependent_trait_objects)]
    = note: for more information, see issue #56484 <https://github.com/rust-lang/rust/issues/56484>
 
 warning: conflicting implementations of trait `Trait` for type `(dyn std::marker::Send + std::marker::Sync + 'static)`: (E0119)
-  --> $DIR/issue-33140-traitobject-crate.rs:88:1
+  --> $DIR/issue-33140-traitobject-crate.rs:89:1
    |
 LL | unsafe impl Trait for dyn (::std::marker::Send) + Send + Sync { }
    | ------------------------------------------------------------- first implementation here
@@ -27,7 +27,7 @@ LL | unsafe impl Trait for dyn (::std::marker::Sync) + Send { }
    = note: for more information, see issue #56484 <https://github.com/rust-lang/rust/issues/56484>
 
 warning: conflicting implementations of trait `Trait` for type `(dyn std::marker::Send + std::marker::Sync + 'static)`: (E0119)
-  --> $DIR/issue-33140-traitobject-crate.rs:92:1
+  --> $DIR/issue-33140-traitobject-crate.rs:93:1
    |
 LL | unsafe impl Trait for dyn (::std::marker::Sync) + Send { }
    | ------------------------------------------------------ first implementation here