Remove section about client application from front page of the docs (#808)

I removed the sections about client applications as it is already
covered in the Tutorial and in a separate Guide.

Author: kvch

docs/getting-started.md

@@ -2,34 +2,6 @@
 
 This guide covers the key concepts of `pgroll` and how to get started with it.
 
-### Client applications
-
-In order to work with the multiple versioned schema that `pgroll` creates, clients need to be configured to work with one of them. 
-
-This is done by having client applications configure the [search path](https://www.postgresql.org/docs/current/ddl-schemas.html#DDL-SCHEMAS-PATH) when they connect to the Postgres database.
-
-For example, this fragment for a Go client application shows how to set the `search_path` after a connection is established:
-
-```go
-db, err := sql.Open("postgres", "postgres://postgres:postgres@localhost:5432/postgres?sslmode=disable")
-if err != nil {
-    return nil, err
-}
-
-searchPath := "public_02_add_assignee_column"
-log.Printf("Setting search path to %q", searchPath)
-_, err = db.Exec(fmt.Sprintf("SET search_path = %s", pq.QuoteIdentifier(searchPath)))
-if err != nil {
-    return nil, fmt.Errorf("failed to set search path: %s", err)
-}
-```
-
-In practice, the `searchPath` variable would be provided to the application as an environment variable.
-
-#### What happens if an application doesn't set the `search_path`?
-
-If an application doesn't set the `search_path` for the connection, the `search_path` defaults to the `public` schema, meaning that the application will be working with the underlying tables directly rather than accessing them through the versioned views.
-
 ## Supported Postgres versions
 
 `pgroll` supports Postgres versions >= 14.