Revert r63383, r63248 "compile.c: copy a short insn with leave"
When copying `leave` insn, TRACE also should be copied if it is
present, but this optimization is trivial and not worth the
complexity. [ruby-core:91366] [Bug #15578]
4cae5353c03009beb1e0a1619422072773580609
5afd479de63b6609ddcd1510da94d2c1ac384f7f
merge revision(s) 66977: [Backport #15578]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e