[mlir][bufferization] Remove `finalizing-bufferize` pass (#114154)

The dialect conversion-based bufferization passes have been migrated to
One-Shot Bufferize about two years ago. To clean up the code base, this
commit removes the `finalizing-bufferize` pass, one of the few remaining
parts of the old infrastructure. Most bufferization passes have already
been removed.

Note for LLVM integration: If you depend on this pass, migrate to
One-Shot Bufferize or copy the pass to your codebase.

Depends on #114152.