chore: remove unused config

.pico/config.toml

-# Current picodata HTTP API version.
-apiVersion = "v1"
-# Context to be used if flag --context is not provided.
-current-context = "dev-admin"
-
-# List of settings passed as arguments to a specific command
-[preferences.list]
-format = "json"
-describe = true
-
-[preferences.describe]
-format = "json"
-
-# List of clusters.
-[[cluster]]
-name = "development"
-# Array of addresses (formatted as [host]:[binary_port]).
-# Each element is the peer address of the instance in the cluster
-peer = [ "192.168.0.2:3301", "192.168.0.2:3302", "192.168.0.3:3302" ]
-# HTTP API address of the cluster.
-# At this address, we are accessing the cluster.
-http_entrypoint = "192.168.0.2:8081"
-
-[[cluster]]
-name = "client.company.com"
-peer = [ "192.168.5.2:3301", "192.168.5.2:3302", "192.168.5.3:3302", "192.168.5.2:3303" ]
-entrypoint = "192.168.5.2:8081"
-
-# The context is a combination of cluster to work with and 
-# the user on behalf of which operations would be performed.
-[[contexts]]
-name = "dev-guest"
-
-  [contexts.context]
-  # Cluster name corresponding to one of the clusters in the cluster block.
-  cluster = "development"
-  # The username from which the connection is established.
-  user = "guest"
-
-# In this example, the same cluster has 2 different contexts 
-# with different users. This context will run on behalf of the 
-# user dev-admin.
-[[contexts]]
-name = "dev-admin"
-
-  [contexts.context]
-  cluster = "development"
-  user = "admin"
-
-[[contexts]]
-name = "prod"
-
-  [contexts.context]
-  cluster = "client.company.com"
-  user = "petr.ivanov@picodata.io"
-