[WASM] Remove workaround for frontend bug

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/lower/WasmTypeOperatorLowering.kt

@@ -168,22 +168,6 @@ class WasmBaseTypeOperatorTransformer(val context: WasmBackendContext) : IrEleme
             }
         }
 
-        // Workaround for the bug in frontend.
-        // In code like this:
-        //    val p: Int = try {
-        //        1
-        //    } catch (e: Exception) {
-        //        throw RuntimeException()
-        //    }
-        // Frontend will emit IMPLICIT_CAST from Unit into Int. Such code can't be correctly compiled to wasm as it is.
-        // This supposed to only happen in the unreachable code so we emit unreachable intrinsic.
-        if (fromType == builtIns.unitType && toType !in listOf(builtIns.unitType, builtIns.anyType, builtIns.anyNType)) {
-            return builder.irComposite(resultType = toType) {
-                +value
-                +builder.irCall(symbols.wasmUnreachable)
-            }
-        }
-
         // Handled by autoboxing transformer
         if (toType.isInlined() && !fromType.isInlined()) {
             return builder.irCall(