remove unsigned_add_overflow_condition (#6199)

crates/cranelift/src/func_environ.rs

@@ -2150,10 +2150,6 @@ impl<'module_environment> cranelift_wasm::FuncEnvironment for FuncEnvironment<'m
         Ok(())
     }
 
-    fn unsigned_add_overflow_condition(&self) -> ir::condcodes::IntCC {
-        self.isa.unsigned_add_overflow_condition()
-    }
-
     fn relaxed_simd_deterministic(&self) -> bool {
         self.tunables.relaxed_simd_deterministic
     }