docs: Update iApp guide titles for consistency and clarity

Author: Le-Caignec

src/guides/build-iapp/build-&-deploy.md

@@ -4,7 +4,7 @@ description:
   How to create a confidential iExec application and deploy it on iExec protocol
 ---
 
-# Create and Deploy an iApp
+# Build and Deploy an iApp
 
 iApp (iExec Applications) are decentralized applications that run on the iExec
 network. They use confidential computing to ensure data privacy and security

src/guides/use-iapp/run-iapp.md

@@ -20,7 +20,6 @@ protected data, arguments, and input files, see the dedicated guides.
 
 - **iApp Generator CLI**: For developers who have built their own iApp
 - **iExec Library**: For JavaScript applications and web3 integration
-- **iExec CLI**: For quick testing and automation scripts
 
 ## Method 1: Using the iApp Generator CLI
 
@@ -102,15 +101,6 @@ const taskId = await iexec.order.matchOrders({
 });
 ```
 
-## Method 3: Using the iExec CLI
-
-The iExec CLI is perfect for quick executions and automation scripts.
-
-```bash
-# Execute an iApp
-iexec app run 0x456def...
-```
-
 ## Next Steps
 
 - Discover how to