Revert "[WebAssembly] Implementation of global.get/set for reftypes in LLVM IR"

This reverts commit 4facbf213c51e4add2e8c19b08d5e58ad71c72de.

```
********************
FAIL: LLVM :: CodeGen/WebAssembly/funcref-call.ll (44466 of 44468)
******************** TEST 'LLVM :: CodeGen/WebAssembly/funcref-call.ll' FAILED ********************
Script:
--
: 'RUN: at line 1';   /builddirs/llvm-project/build-Clang12/bin/llc < /repositories/llvm-project/llvm/test/CodeGen/WebAssembly/funcref-call.ll --mtriple=wasm32-unknown-unknown -asm-verbose=false -mattr=+reference-types | /builddirs/llvm-project/build-Clang12/bin/FileCheck /repositories/llvm-project/llvm/test/CodeGen/WebAssembly/funcref-call.ll
--
Exit Code: 2

Command Output (stderr):
--
llc: /repositories/llvm-project/llvm/include/llvm/Support/LowLevelTypeImpl.h:44: static llvm::LLT llvm::LLT::scalar(unsigned int): Assertion `SizeInBits > 0 && "invalid scalar size"' failed.

```

1 files changed, 0 insertions, 25 deletions

diff --git a/llvm/lib/Target/WebAssembly/Utils/WebAssemblyUtilities.cpp b/llvm/lib/Target/WebAssembly/Utils/WebAssemblyUtilities.cpp
index 3da80f4..824d336 100644
--- a/llvm/lib/Target/WebAssembly/Utils/WebAssemblyUtilities.cpp
+++ b/llvm/lib/Target/WebAssembly/Utils/WebAssemblyUtilities.cpp
@@ -116,31 +116,6 @@ MCSymbolWasm *WebAssembly::getOrCreateFunctionTableSymbol(
   return Sym;
 }
 
-MCSymbolWasm *WebAssembly::getOrCreateFuncrefCallTableSymbol(
-    MCContext &Ctx, const WebAssemblySubtarget *Subtarget) {
-  StringRef Name = "__funcref_call_table";
-  MCSymbolWasm *Sym = cast_or_null<MCSymbolWasm>(Ctx.lookupSymbol(Name));
-  if (Sym) {
-    if (!Sym->isFunctionTable())
-      Ctx.reportError(SMLoc(), "symbol is not a wasm funcref table");
-  } else {
-    Sym = cast<MCSymbolWasm>(Ctx.getOrCreateSymbol(Name));
-
-    // Setting Weak ensure only one table is left after linking when multiple
-    // modules define the table.
-    Sym->setWeak(true);
-
-    wasm::WasmLimits Limits = {0, 1, 1};
-    wasm::WasmTableType TableType = {wasm::WASM_TYPE_FUNCREF, Limits};
-    Sym->setType(wasm::WASM_SYMBOL_TYPE_TABLE);
-    Sym->setTableType(TableType);
-  }
-  // MVP object files can't have symtab entries for tables.
-  if (!(Subtarget && Subtarget->hasReferenceTypes()))
-    Sym->setOmitFromLinkingSection();
-  return Sym;
-}
-
 // Find a catch instruction from an EH pad.
 MachineInstr *WebAssembly::findCatch(MachineBasicBlock *EHPad) {
   assert(EHPad->isEHPad());