test(devx): Removed CTF challenges till we can deploy them on testnet

docs/content/developer/developer.mdx

@@ -40,10 +40,6 @@ The Cryptography section demonstrates how to secure your smart contracts with cr
 
 Go to [Cryptography](cryptography.mdx).
 
-## Capture the Flag
-
-Get aquainted with IOTA by solving challenges of increasing complexity in the [Capture the Flag section](iota-move-ctf/introduction.mdx).
-
 ## Advanced Topics
 
 The Advanced Topics section includes guides for advanced solutions (like asset tokenization). These topics assume you are familiar with Move and the IOTA blockchain.

docs/content/developer/getting-started/getting-started.mdx

@@ -33,6 +33,5 @@ If you are already familiar with the basics, you can try the following sections:
   Move's [Object Model](../iota-101/objects/object-model.mdx).
 - [From Solidity/EVM to Move](../evm-to-move/evm-to-move.mdx): If you're an experienced Solidity developer, check out
   the key differences between developing on Move.
-- Learn Move with the [IOTA Capture the Flag](../iota-move-ctf/introduction.mdx) challenges.
 - [Cryptography](../cryptography.mdx): Leverage multiple cryptographic algorithms to
   create secure and flexible smart contracts applications.