Fix repeated items in left nav (#4783)

Signed-off-by: Peeter Piegaze <[email protected]>

docs/index.md

@@ -135,6 +135,7 @@ Have questions or need support? The best way to reach us is through Slack:
 :hidden:
 
 Introduction <introduction>
+Quickstart guide <flytesnacks/getting_started/quickstart_guide>
 Getting started with workflow development <flytesnacks/getting_started/getting_started_with_workflow_development>
 Flyte Fundamentals <flytesnacks/getting_started/flyte_fundamentals>
 Core Use Cases <flytesnacks/getting_started/core_use_cases>

docs/introduction.md

@@ -36,16 +36,3 @@ Flyte is made up of a user plane, control plane, and data plane.
 * To quickly try out Flyte on your machine, follow the {ref}`Quickstart guide <getting_started_quickstart_guide>`.
 * To create a Flyte project that can be used to package workflow code for deployment to a Flyte cluster, see {ref}`"Getting started with workflow development" <getting_started_workflow_development>`.
 * To set up a Flyte cluster, see the [Deployment documentation](https://docs.flyte.org/en/latest/deployment/index.html).
-
-
-```{toctree}
-:maxdepth: -1
-:caption: Getting Started
-:hidden:
-
-Introduction to Flyte <self>
-flytesnacks/getting_started/quickstart_guide
-flytesnacks/getting_started/getting_started_with_workflow_development
-flytesnacks/getting_started/flyte_fundamentals
-flytesnacks/getting_started/core_use_cases
-```