Remove in_band_lifetimes from rustc_codegen_llvm

See #91867 for more information.

compiler/rustc_codegen_llvm/src/back/lto.rs

@@ -363,7 +363,7 @@ fn fat_lto(
 
 crate struct Linker<'a>(&'a mut llvm::Linker<'a>);
 
-impl Linker<'a> {
+impl<'a> Linker<'a> {
     crate fn new(llmod: &'a llvm::Module) -> Self {
         unsafe { Linker(llvm::LLVMRustLinkerNew(llmod)) }
     }
@@ -383,7 +383,7 @@ impl Linker<'a> {
     }
 }
 
-impl Drop for Linker<'a> {
+impl Drop for Linker<'_> {
     fn drop(&mut self) {
         unsafe {
             llvm::LLVMRustLinkerFree(&mut *(self.0 as *mut _));