PIO: Remove useless inheritence (references extends env) (#8987)

Remove lib_deps section for all PlatformIO envs which are unneeded (only references the `extends` lib_deps, thus pointless)

This makes the configs more concise and make future PIO variants/ libdeps audits easier.

variants/esp32s3/heltec_v4/platformio.ini

@@ -7,8 +7,6 @@ build_flags =
   ${esp32s3_base.build_flags}
   -D HELTEC_V4
   -I variants/esp32s3/heltec_v4
-lib_deps = 
-  ${esp32s3_base.lib_deps}
 
 
 [env:heltec-v4]

variants/esp32s3/icarus/platformio.ini

@@ -8,8 +8,6 @@ board_build.partitions = default_8MB.csv
 upload_protocol = esptool
 upload_speed = 921600
 platform_packages = platformio/framework-arduinoespressif32@https://github.com/PowerFeather/powerfeather-meshtastic-arduino-lib/releases/download/2.0.16a/esp32-2.0.16.zip
-lib_deps =
-  ${esp32s3_base.lib_deps}
 build_unflags =
   ${esp32s3_base.build_unflags}
   -DARDUINO_USB_MODE=1

variants/esp32s3/m5stack_cores3/platformio.ini

@@ -10,4 +10,3 @@ build_flags =
   -D PRIVATE_HW
   -D M5STACK_CORES3
   -I variants/esp32s3/m5stack_cores3
-lib_deps = ${esp32s3_base.lib_deps}

variants/esp32s3/seeed_xiao_s3/platformio.ini

@@ -6,8 +6,6 @@ board_check = true
 board_build.partitions = default_8MB.csv
 upload_protocol = esptool
 upload_speed = 921600
-lib_deps =
-  ${esp32s3_base.lib_deps}
 build_unflags =
   ${esp32s3_base.build_unflags}
   -DARDUINO_USB_MODE=1

variants/esp32s3/station-g2/platformio.ini

@@ -8,8 +8,6 @@ board_build.mcu = esp32s3
 upload_protocol = esptool
 ;upload_port = /dev/ttyACM0
 upload_speed = 921600
-lib_deps =
-  ${esp32s3_base.lib_deps}
 build_unflags =
   ${esp32s3_base.build_unflags}
   -DARDUINO_USB_MODE=1