Remove redundant example

Author: ab-10

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "themes/hermit-V2"]
 	path = themes/hermit-V2
 	url = https://github.com/1bl4z3r/hermit-V2
+[submodule "themes/archie"]
+	path = themes/archie
+	url = https://github.com/athul/archie

content/posts/rules.md

@@ -63,17 +63,6 @@ These rules catch the performance killers that don't show up until you're under
 For most applications, they're probably overkill - but if you're one of the lucky few startups with actual users, these patterns become critical.
 They're designed to prevent issues that work fine in development but can bring down your entire API when traffic picks up.
 
-```yaml
-custom_rules:
-  - name: "Avoid Blocking Operations in Request Handlers"
-    applicable_files:
-      - "routes/**/*.js"
-      - "api/**/*.js"
-      - "**/*handler*.js"
-    description: "Don't use synchronous operations (fs.readFileSync, crypto.pbkdf2Sync) in request handlers as they block the event loop and kill performance under load. Use async alternatives or move to worker threads. One blocking operation can take down your entire API response time."
-```
-
-
 ```yaml
 custom_rules:
   - name: "Avoid Blocking Operations in Request Handlers"