def _unset_default_params(glyphs):
for glyphs_name, _, default_value in DEFAULT_PARAMETERS:<EOL><INDENT>if (<EOL>glyphs_name in glyphs.customParameters<EOL>and glyphs.customParameters[glyphs_name] == default_value<EOL>):<EOL><INDENT>del (glyphs.customParameters[glyphs_name])<EOL><DEDENT>if (<EOL>glyphs_name in glyphs.customParameters<EOL>and glyphs.customParameters[glyphs_name] == default_value<EOL>):<EOL><INDENT>del (glyphs.customParameters[glyphs_name])<EOL><DEDENT><DEDENT>
Unset Glyphs.app's parameters that have default values.
    FIXME: (jany) maybe this should be taken care of in the writer? and/or
        classes should have better default values?