Remove unused ROM_ELFS_DIR variable

Removed unused ROM_ELFS_DIR and related environment variables.

Author: Jason2866

builder/frameworks/espidf.py

@@ -88,16 +88,11 @@
 
 IDF_ENV_VERSION = "1.0.0"
 _framework_pkg_dir = platform.get_package_dir("framework-espidf")
-_rom_elfs_dir = platform.get_package_dir("tool-esp-rom-elfs")
 if not _framework_pkg_dir or not os.path.isdir(_framework_pkg_dir):
     sys.stderr.write(f"Error: Missing framework directory '{_framework_pkg_dir}'\n")
     env.Exit(1)
 FRAMEWORK_DIR_PATH = Path(_framework_pkg_dir).resolve()
-ROM_ELFS_DIR_PATH = Path(_rom_elfs_dir).resolve()
 FRAMEWORK_DIR = str(FRAMEWORK_DIR_PATH)
-ROM_ELFS_DIR = str(ROM_ELFS_DIR_PATH)
-os.environ['IDF_PATH'] = FRAMEWORK_DIR
-os.environ['ESP_ROM_ELF_DIR'] = ROM_ELFS_DIR
 TOOLCHAIN_DIR = platform.get_package_dir(
     "toolchain-xtensa-esp-elf"
     if mcu in ("esp32", "esp32s2", "esp32s3")
@@ -109,13 +104,13 @@
     sys.stderr.write(f"Error: Missing toolchain directory '{TOOLCHAIN_DIR}'\n")
     env.Exit(1)
 
-
 def create_silent_action(action_func):
     """Create a silent SCons action that suppresses output"""
     silent_action = env.Action(action_func)
     silent_action.strfunction = lambda target, source, env: ''
     return silent_action
 
+
 if "arduino" in env.subst("$PIOFRAMEWORK"):
     _arduino_pkg_dir = platform.get_package_dir("framework-arduinoespressif32")
     if not _arduino_pkg_dir or not os.path.isdir(_arduino_pkg_dir):