[llvm] [llc] Remove C backend support (PR #79237)

[Fangrui Song via llvm-commits]

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@@ -7,8 +7,8 @@
 //===----------------------------------------------------------------------===//
 //
 // This is the llc code generator driver. It provides a convenient
-// command-line interface for generating native assembly-language code
-// or C code, given LLVM bitcode.
+// command-line interface for generating native assembly-language code,
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MaskRay wrote:

generating an assembly file or a relocatable file, given LLVM bitcode.

https://github.com/llvm/llvm-project/pull/79237