codegen: stop treating core precondition_check as panic entry point

Author: LegNeato

crates/rustc_codegen_spirv/src/codegen_cx/declare.rs

@@ -230,9 +230,6 @@ impl<'tcx> CodegenCx<'tcx> {
         }
         let is_nonlocal = !def_id.is_local();
         let is_nonlocal_core = is_nonlocal && self.tcx.crate_name(def_id.krate) == sym::core;
-        if is_nonlocal_core && demangled_symbol_name.ends_with("::precondition_check") {
-            self.panic_entry_points.borrow_mut().insert(def_id);
-        }
         let is_spirv_std_byte_addressable_bounds_check = is_nonlocal
             && self.tcx.def_path_str(def_id) == "spirv_std::byte_addressable_buffer::bounds_check";
         if (is_nonlocal_core && demangled_symbol_name.ends_with("::bounds_check"))