Remove obsolete #LUMP command (and related variables)

[yantosca]

Overview

This PR removes the obsolete #LUMP command from KPP. This is an old command that has probably not worked in a very long time.

Modifications

docs/source/tech_info/08_bnf_description_of_kpp_lang.rst

• Remove #LUMP, lump, lump_sum, lump_list from BNF syntax list

docs/source/using_kpp/04_input_for_kpp.rst

• Remove #LUMP section
• Remove reference to lumped species in #DEFVAR and #DEFFIX section

site-lisp/kpp.el site-lisp/kpp_mecca.el

• Remove #LUMP from the font-lock-mode list

src/scan.h

• Remove function prototypes forAddLumpSpecies, CheckLump

src/scan.l

• Remove references to LMP_STATE and LUMP

src/scan.y

• Remove references to LUMP, LMPCOLON, LMPPLUS, LMPSPC, lumps, lump

src/scanner.c

• Remove C-language routines AddLumpSpecies, CheckLump

CHANGELOG.md

• Updated accordingly