remove system_start_delimiter

[Peter Buhr]

I'm creating a glyph to include in a picture showing the range of notes on a
classical guitar (see below).

1. How do I remove the system_start_delimiter (large opening brace) at the start
   of the score? I've tried a number of things to remove the brace but none
   were successful.

2. How do I globally set markup text to be in "times" font? I.e., I want to do
   something like this:

   \override TextSpanner #'font-name = #"times"

   but for markup text *THROUGHOUT* the entire score.

================================================================================

\version "2.13.49"
\include "english.ly"
#(set-default-paper-size "letter")
#(set-global-staff-size 24)
\paper {
        tagline = ##f
        line-width = 0.75\in
} % paper
\layout {
        indent = 0.0
        \context {
                \Staff
                \remove "Time_signature_engraver"
                \remove "System_start_delimiter_engraver" % does not work
        } % context
} % layout
\new PianoStaff {
        <<
                \context Staff = "up" {
                        \relative c' {
                                #(set-accidental-style 'forget)
                                b''1^\markup{B}
                        } % relative
                } % context
                \context Staff = "down" {
                        \relative c' {
                                \clef bass
                                #(set-accidental-style 'forget)
                                e,,1_\markup{E}
                        } % relative
                } % context
        >>
} % PianoStaff

% Local Variables: %
% tab-width: 4 %
% compile-command: "lilypond -dbackend=eps range.ly" %
% End: %