Remove let expressions from bytecode

Author: hcnelson99

bytecode/bytecode.pdf

@@ -60,7 +60,6 @@ \section{Bytecode Abstract Syntax}
   & |   & e.m(\overline{e})                                              &\\
   & |   & e.f                                                            &\\
   & |   & e.f = e                                                        &\\
-  & |   & \keyw{let} x=e~\keyw{in}~e                                     &\\
   & |   & \mathscr{L}                                                    &\\
   & |   & e.\keyw{match} \overline{x:p.L \Rightarrow e} ~[\keyw{else} e] &\\
   & |   & \overline{e ~| ~d}                                             &\\