Removes mention of account password.

Erm, so apparently we only mention the old "account password" once. Just ran this grep to double check:

$ cd `content`
$ grep -Rin 'password' ./

.//guides/spin-up-a-devnet.md:45:    You may need to enter your computer's password when prompted.
.//concepts/validators.md:59:`entropy-tss` is a member of the `entropy-core` workspace. When you run `entropy-tss`, you will be asked for a password
.//concepts/validators.md:62:Be aware there is no way to recover this password if you lose it.

Guess we're done here.

entropyxyz / entropy-docs

Removes mention of account password. #239