Rollup merge of rust-lang#108822 - nikic:legacy-pm-removal-2, r=cuviper

Remove references to PassManagerBuilder

This is a legacy PM concept that we no longer use.

Author: matthiaskrgr

compiler/rustc_codegen_llvm/src/llvm/ffi.rs

@@ -640,9 +640,6 @@ extern "C" {
 pub struct Builder<'a>(InvariantOpaque<'a>);
 #[repr(C)]
 pub struct PassManager<'a>(InvariantOpaque<'a>);
-extern "C" {
-    pub type PassManagerBuilder;
-}
 extern "C" {
     pub type Pass;
 }

compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp

@@ -26,7 +26,6 @@
 #endif
 #include "llvm/Support/Host.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/IPO/PassManagerBuilder.h"
 #include "llvm/Transforms/IPO/AlwaysInliner.h"
 #include "llvm/Transforms/IPO/FunctionImport.h"
 #include "llvm/Transforms/IPO/Internalize.h"
@@ -35,7 +34,6 @@
 #include "llvm/Transforms/Utils/FunctionImportUtils.h"
 #include "llvm/LTO/LTO.h"
 #include "llvm/Bitcode/BitcodeWriter.h"
-#include "llvm-c/Transforms/PassManagerBuilder.h"
 
 #include "llvm/Transforms/Instrumentation.h"
 #include "llvm/Transforms/Instrumentation/AddressSanitizer.h"