Tweak build flags

platformio.ini

@@ -1046,7 +1046,6 @@ build_flags = ${common.build_flags} ${esp32.build_flagsV4} ${common_mm.build_fla
   ;-Wstack-usage=2732       ;; warn if a function needs more that 30% of availeable stack ("stack usage might be unbounded", "stack usage is 2824 bytes")
   ;-Wsuggest-attribute=const -Wsuggest-attribute=pure ;;  ask compiler for hints on attributes
   -D WLED_ENABLE_DMX_INPUT
-  -D WLED_ENABLE_SMARTMATRIX
 lib_deps = ${esp32.lib_depsV4} ${common_mm.lib_deps_S}
   https://github.com/someweisguy/esp_dmx.git#v3.0.2-beta  ;; for DMX_INPUT
 board_build.partitions = ${esp32.default_partitions}