[llvm] [NFC] clang-format utils/TableGen (PR #80973)

[Pierre van Houtryve via llvm-commits]

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@@ -281,14 +306,19 @@ static void UnescapeString(std::string &Str) {
 /// causes non-standard escape character warnings.
 static void UnescapeAliasString(std::string &Str) {
   for (unsigned i = 0; i != Str.size(); ++i) {
-    if (Str[i] == '\\' && i != Str.size()-1) {
-      switch (Str[i+1]) {
-      default: continue;  // Don't execute the code after the switch.
-      case '{': Str[i] = '{'; break;
-      case '}': Str[i] = '}'; break;
+    if (Str[i] == '\\' && i != Str.size() - 1) {
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Pierre-vh wrote:

idem

https://github.com/llvm/llvm-project/pull/80973