Remove FileType::Other

Added in #35174, this was already unused (and new uses have not been introduced
since then).

src/librustc_codegen_llvm/llvm/ffi.rs

@@ -358,9 +358,6 @@ pub fn from_generic(sc: rustc_codegen_ssa::common::SynchronizationScope) -> Self
 #[derive(Copy, Clone)]
 #[repr(C)]
 pub enum FileType {
-    // FIXME: figure out if this variant is needed at all.
-    #[allow(dead_code)]
-    Other,
     AssemblyFile,
     ObjectFile,
 }

src/rustllvm/PassWrapper.cpp

@@ -597,7 +597,6 @@ extern "C" void LLVMRustSetLLVMOptions(int Argc, char **Argv) {
 }
 
 enum class LLVMRustFileType {
-  Other,
   AssemblyFile,
   ObjectFile,
 };