Fix optional board "extra_flags" and "ldscript"

platformio/builder/main.py

@@ -84,15 +84,6 @@ if "BOARD" in env:
         env.Replace(UPLOAD_PROTOCOL="${BOARD_OPTIONS['upload']['protocol']}")
     if "UPLOAD_SPEED" not in env:
         env.Replace(UPLOAD_SPEED="${BOARD_OPTIONS['upload']['speed']}")
-    # specific linker script
-    if "ldscript" in env.get("BOARD_OPTIONS", {}).get("build", {}):
-        env.Replace(
-            LINKFLAGS=["-T", join(
-                "$PIOHOME_DIR", "packages", "ldscripts",
-                "${BOARD_OPTIONS['build']['ldscript']}")]
-        )
-    if "extra_flags" in env.get("BOARD_OPTIONS", {}).get("build", {}):
-        env.MergeFlags(env.subst("${BOARD_OPTIONS['build']['extra_flags']}"))
 
 if "IGNORE_LIBS" in env:
     env['IGNORE_LIBS'] = [l.strip() for l in env['IGNORE_LIBS'].split(",")]