Remove invalid ASM tests

These still fail on some architectures.

src/test/ui/asm/invalid-inline-asm-2.rs

-// ignore-wasm
-// ignore-emscripten
-
-#![feature(asm)]
-
-fn main() {
-    let a: usize;
-
-    unsafe {
-        asm!("" : "=d"(a) : : : );
-        //~^ ERROR couldn't allocate output register for constraint 'd'
-    }
-}

src/test/ui/asm/invalid-inline-asm-2.stderr

-error: couldn't allocate output register for constraint 'd'
-  --> $DIR/invalid-inline-asm-2.rs:10:9
-   |
-LL |         asm!("" : "=d"(a) : : : );
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-

src/test/ui/asm/invalid-inline-asm.rs

-// ignore-wasm
-// ignore-emscripten
-
-#![feature(asm)]
-
-fn main() {
-    let byte = 0;
-    let port = 0x80;
-
-    unsafe { asm!("out %al, %dx" :: "a" (byte), "d" (port) :: "volatile"); }
-    //~^ ERROR couldn't allocate input reg for constraint 'a'
-}

src/test/ui/asm/invalid-inline-asm.stderr

-error: couldn't allocate input reg for constraint 'a'
-  --> $DIR/invalid-inline-asm.rs:10:14
-   |
-LL |     unsafe { asm!("out %al, %dx" :: "a" (byte), "d" (port) :: "volatile"); }
-   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-