clean up tor documentation

[ZZiigguurraatt]

At https://docs.lightning.engineering/lightning-network-tools/lnd/quick-tor-setup#create-a-tor-hidden-service we suggest a complicated process to create a hashed password. However, at https://docs.lightning.engineering/lightning-network-tools/lnd/configuring_tor#authentication the easier cookie authentication is mentioned and the setup for that is done at https://docs.lightning.engineering/lightning-network-tools/lnd/configuring_tor#getting-started . Generally, there seem to be a lot of redundant information in both the "Quick Tor Setup" and "Configuring Tor" and it seems like "Quick Tor Setup" is not as easy as "Configuring Tor".