fix: service mode always light (#686)

Author: reliveyy

images/utils/launcher/config/config.py

@@ -109,7 +109,6 @@ def parse_command_line_arguments(self):
             "--bitcoind.mode",
             metavar="<mode>",
             choices=["native", "external", "neutrino", "light"],
-            default="light",
             help="Bitcoind service mode"
         )
         group.add_argument(
@@ -154,7 +153,6 @@ def parse_command_line_arguments(self):
             "--litecoind.mode",
             metavar="<mode>",
             choices=["native", "external", "neutrino", "light"],
-            default="light",
             help="Litecoind service mode"
         )
         group.add_argument(
@@ -199,7 +197,6 @@ def parse_command_line_arguments(self):
             "--geth.mode",
             metavar="<mode>",
             choices=["native", "external", "infura", "light"],
-            default="light",
             help="Geth service mode"
         )
         group.add_argument(