Update dev-querying-state.mdx

Removed small duplicate section

pages/dev-querying-state.mdx

@@ -38,8 +38,6 @@ Archive nodes, on the other hand, store the entire history of the blockchain fro
 
 •	**Use Cases**: Archive nodes are crucial for tasks that require access to historical data, such as catching up indexers, conducting historical analysis, and verifying past transactions.
 
-## **Querying by Block Height**
-
 ## **Using Indexers for Historical Data**
 
 While archive nodes provide the raw historical data, indexers are essential for efficiently querying and analyzing this data. Indexers organize and optimize the data, making it easier to access and analyze.