Remove a palette file by name, trying across types if necessary.
Arguments
- name
Character. Palette name (without '.json' suffix).
- type
Character. Optional. Preferred type ("sequential", "diverging", or "qualitative").
- color_dir
Character. Root folder where palettes are stored (required). Use tempdir() for examples/tests.
- log
Logical. Whether to log palette removal to a temporary log file.
