Fix NanoC6,H2 settings

Author: GOB52

platformio.ini

@@ -78,7 +78,6 @@ lib_deps = ${env.lib_deps}
 [NanoC6]
 extends = m5base
 board = m5stack-nanoc6
-board_build.partitions = default_4MB.csv
 build_flags =
     -DARDUINO_USB_CDC_ON_BOOT=1
     -DARDUINO_USB_MODE=1
@@ -88,7 +87,6 @@ lib_deps = ${env.lib_deps}
 [NanoH2]
 extends = m5base
 board = m5stack-nanoh2
-board_build.partitions = default_4MB.csv
 build_flags =
     -DARDUINO_USB_CDC_ON_BOOT=1
     -DARDUINO_USB_MODE=1