Revert "Add test for pretty printing anonymous types"

This reverts commit d59b1f1ef4.

src/test/pretty/anonymous-types.rs

@@ -1,24 +0,0 @@
-// Test for issue 85480
-// Pretty print anonymous struct and union types
-
-// pp-exact
-// pretty-compare-only
-
-struct Foo {
-    _: union {
-           _: struct {
-                  a: u8,
-                  b: u16,
-              },
-           c: u32,
-       },
-    d: u64,
-    e: f32,
-}
-
-type A =
- struct {
-     field: u8,
- };
-
-fn main() { }