[wasm] Remove dead code kind

{kCopiedStub} is not used any more since https://crrev.com/c/1012024.

R=mstarzinger@chromium.org

Change-Id: Idb0049f7d0bb0215cef902daba49591596f93668
Reviewed-on: https://chromium-review.googlesource.com/1042225Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52956}

src/frames.cc

@@ -463,7 +463,6 @@ StackFrame::Type StackFrame::ComputeType(const StackFrameIteratorBase* iterator,
         case wasm::WasmCode::kInterpreterStub:
           return WASM_INTERPRETER_ENTRY;
         case wasm::WasmCode::kFunction:
-        case wasm::WasmCode::kCopiedStub:
           return WASM_COMPILED;
         case wasm::WasmCode::kLazyStub:
           if (StackFrame::IsTypeMarker(marker)) break;

src/wasm/wasm-code-manager.cc

@@ -306,8 +306,6 @@ const char* GetWasmCodeKindAsString(WasmCode::Kind kind) {
       return "lazy-compile";
     case WasmCode::kInterpreterStub:
       return "interpreter-entry";
-    case WasmCode::kCopiedStub:
-      return "copied stub";
     case WasmCode::kTrampoline:
       return "trampoline";
   }

src/wasm/wasm-code-manager.h

@@ -86,7 +86,6 @@ class V8_EXPORT_PRIVATE WasmCode final {
     kWasmToJsWrapper,
     kLazyStub,
     kInterpreterStub,
-    kCopiedStub,
     kTrampoline
   };