Removed unused macros

Marlin/src/lcd/language/language_bg.h

Marlin/src/lcd/language/language_ca.h

Marlin/src/lcd/language/language_cz.h

Marlin/src/lcd/language/language_da.h

Marlin/src/lcd/language/language_de.h

Marlin/src/lcd/language/language_el-gr.h

Marlin/src/lcd/language/language_el.h

Marlin/src/lcd/language/language_es.h

Marlin/src/lcd/language/language_fi.h

Marlin/src/lcd/language/language_fr.h

Marlin/src/lcd/language/language_gl.h

Marlin/src/lcd/language/language_it.h

Marlin/src/lcd/language/language_jp-kana.h

Marlin/src/lcd/language/language_pl.h

Marlin/src/lcd/language/language_pt-br.h

Marlin/src/lcd/language/language_pt.h

Marlin/src/lcd/language/language_ru.h

Marlin/src/lcd/language/language_sk.h

Marlin/src/lcd/language/language_test.h

Marlin/src/lcd/language/language_tr.h