test: Fix a test on MSVC

Apparently MSVC now has namespaces in backtraces!

src/test/run-pass/backtrace.rs

@@ -46,19 +46,7 @@ fn template(me: &str) -> Command {
 }
 
 fn expected(fn_name: &str) -> String {
-    // FIXME(#32481)
-    //
-    // On windows, we read the function name from debuginfo using some
-    // system APIs. For whatever reason, these APIs seem to use the
-    // "name" field, which is only the "relative" name, not the full
-    // name with namespace info, so we just see `foo` and not
-    // `backtrace::foo` as we see on linux (which uses the linkage
-    // name).
-    if cfg!(windows) && cfg!(target_env = "msvc") {
-        format!(" - {}", fn_name)
-    } else {
-        format!(" - backtrace::{}", fn_name)
-    }
+    format!(" - backtrace::{}", fn_name)
 }
 
 fn runtest(me: &str) {