Remove obsoleted lldb_yjit.py

which clearly seems to be written for Ruby 3.1 YJIT that was not
rewritten in Rust yet. Since it has been left there as is, I don't think
anybody is actively using this script. We could add a new one if we need
it again.

misc/lldb_yjit.py

@@ -1,47 +0,0 @@
-#!/usr/bin/env python
-#coding: utf-8
-#
-# Usage: run `command script import -r misc/lldb_yjit.py` on LLDB
-#
-
-from __future__ import print_function
-import lldb
-import os
-import shlex
-
-def list_comments(debugger, command, result, internal_dict):
-    target = debugger.GetSelectedTarget()
-    process = target.GetProcess()
-    thread = process.GetSelectedThread()
-    frame = thread.GetSelectedFrame()
-
-    # Get the different types we need
-    rb_darray_meta_t = target.FindFirstType("rb_darray_meta_t")
-    codeblock_t = target.FindFirstType("codeblock_t")
-    yjit_comment = target.FindFirstType("yjit_comment")
-
-    # Get the global variables we need
-    comments = target.FindFirstGlobalVariable("yjit_code_comments")
-    cb = target.FindFirstGlobalVariable("cb").Cast(codeblock_t.GetPointerType())
-
-    # Get the address of the memory block we're using
-    mem_addr = cb.GetChildMemberWithName("mem_block").GetValueAsUnsigned()
-
-    # Find the size of the darray comment list
-    meta = comments.Cast(rb_darray_meta_t.GetPointerType())
-    size = meta.GetChildMemberWithName("size").GetValueAsUnsigned()
-
-    # Get the address of the block following the metadata header
-    t_offset = comments.GetValueAsUnsigned() + rb_darray_meta_t.GetByteSize()
-
-    # Loop through each comment and print
-    for t in range(0, size):
-        addr = lldb.SBAddress(t_offset + (t * yjit_comment.GetByteSize()), target)
-        comment = target.CreateValueFromAddress("yjit_comment", addr, yjit_comment)
-        string = comment.GetChildMemberWithName("comment")
-        comment_offset = mem_addr + comment.GetChildMemberWithName("offset").GetValueAsUnsigned()
-        print("%0#x %s" % (comment_offset, string.GetSummary()), file = result)
-
-
-def __lldb_init_module(debugger, internal_dict):
-    debugger.HandleCommand("command script add -f lldb_yjit.list_comments lc")