Revert "Wasm ABI can unwind"

This reverts commit 72c4238.

Author: coolreader18

Diff for: compiler/rustc_middle/src/ty/layout.rs

@@ -1243,12 +1243,9 @@ pub fn fn_can_unwind(tcx: TyCtxt<'_>, fn_def_id: Option<DefId>, abi: SpecAbi) ->
         | RiscvInterruptM
         | RiscvInterruptS
         | CCmseNonSecureCall
+        | Wasm
         | PlatformIntrinsic
         | Unadjusted => false,
-        Wasm => {
-            tcx.sess.panic_strategy() == PanicStrategy::Unwind
-                || tcx.sess.target_features.contains(&Symbol::intern("exception-handling"))
-        }
         Rust | RustCall | RustCold | RustIntrinsic => {
             tcx.sess.panic_strategy() == PanicStrategy::Unwind
         }