message: Remove Sean Callanan from the CODE_OWNERS, he won't have time
  to participate in lldb going forward.  Jim Ingham is adopting
  the areas he was responsible for.
diff: @@ -8,10 +8,6 @@ beautification by scripts. The fields are: name (N), email (E), web-address
  (W), PGP key ID and fingerprint (P), description (D), and snail-mail address
  (S).
  -N: Sean Callanan
  -E: scallanan@apple.com
  -D: Expression evaluator, IR interpreter, Clang integration
  -
  N: Greg Clayton
  E: clayborg@gmail.com
  D: Overall LLDB architecture, Host (common+macosx), Symbol, API, ABI, Mac-specific code,
  @@ -22,6 +18,7 @@ N: Jim Ingham
  E: jingham@apple.com
  D: Overall LLDB architecture, Thread plans, Expression parser, ValueObject, Breakpoints, ABI
  D: Watchpoints, Trampolines, Target, Command Interpreter, C++ / Objective C Language runtime
  +D: Expression evaluator, IR interpreter, Clang integration
  D: Data Formatters
  N: Ilia K
  