Add needs-unwind for proc macro tests

Rustc gives a warning when compiling proc macros with panic=abort.

Author: bjorn3

scripts/test_rustc_tests.sh

@@ -41,15 +41,6 @@ rm tests/ui/parser/unclosed-delimiter-in-dep.rs # submodule contains //~ERROR
 # missing features
 # ================
 
-# extra warning about -Cpanic=abort for proc macros
-rm tests/ui/proc-macro/crt-static.rs
-rm tests/ui/proc-macro/proc-macro-deprecated-attr.rs
-rm tests/ui/proc-macro/quote-debug.rs
-rm tests/ui/proc-macro/no-missing-docs.rs
-rm tests/ui/rust-2018/proc-macro-crate-in-paths.rs
-rm tests/ui/proc-macro/allowed-signatures.rs
-rm tests/ui/proc-macro/no-mangle-in-proc-macro-issue-111888.rs
-
 # vendor intrinsics
 rm tests/ui/simd/array-type.rs # "Index argument for `simd_insert` is not a constant"
 rm tests/ui/asm/x86_64/evex512-implicit-feature.rs # unimplemented AVX512 x86 vendor intrinsic