Remove the unused context from CreateDebugLocation

This went unused in commit 88d874de63, part of #68965.

compiler/rustc_codegen_llvm/src/debuginfo/mod.rs

@@ -552,7 +552,6 @@ impl DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
 
         unsafe {
             llvm::LLVMRustDIBuilderCreateDebugLocation(
-                utils::debug_context(self).llcontext,
                 line.unwrap_or(UNKNOWN_LINE_NUMBER),
                 col.unwrap_or(UNKNOWN_COLUMN_NUMBER),
                 scope,

compiler/rustc_codegen_llvm/src/llvm/ffi.rs

@@ -2102,7 +2102,6 @@ extern "C" {
     );
 
     pub fn LLVMRustDIBuilderCreateDebugLocation(
-        Context: &'a Context,
         Line: c_uint,
         Column: c_uint,
         Scope: &'a DIScope,