docs: remove criteria retrieval docs for non-existent feature (#6282)

integrations/mem0-plugin/skills/mem0/references/features.md

@@ -8,7 +8,6 @@ Additional platform capabilities beyond core CRUD operations.
 - [Entity Linking](#entity-linking)
 - [Custom Categories](#custom-categories)
 - [Custom Instructions](#custom-instructions)
-- [Criteria Retrieval](#criteria-retrieval)
 - [Feedback Mechanism](#feedback-mechanism)
 - [Memory Export](#memory-export)
 - [Group Chat](#group-chat)
@@ -165,44 +164,6 @@ await client.updateProject({ customInstructions: "Your guidelines here..." });
 
 ---
 
-## Criteria Retrieval
-
-Custom attribute-based memory ranking using LLM-evaluated criteria with weights. Goes beyond semantic similarity to prioritize memories based on domain-specific signals.
-
-### Configuration
-
-```python
-# Define criteria at project level
-retrieval_criteria = [
-    {"name": "joy", "description": "Positive emotions like happiness and excitement", "weight": 3},
-    {"name": "curiosity", "description": "Inquisitiveness and desire to learn", "weight": 2},
-    {"name": "urgency", "description": "Time-sensitive or high-priority items", "weight": 4},
-]
-client.project.update(retrieval_criteria=retrieval_criteria)
-```
-
-```typescript
-await client.updateProject({
-    retrievalCriteria: [
-        { name: 'joy', description: 'Positive emotions', weight: 3 },
-        { name: 'urgency', description: 'Time-sensitive items', weight: 4 },
-    ],
-});
-```
-
-### Usage
-
-Once configured, `client.search()` automatically applies criteria ranking:
-
-```python
-# Criteria-weighted results returned automatically
-results = client.search("Why am I feeling happy?", filters={"user_id": "alice"})
-```
-
-**Best for:** Wellness assistants, tutoring platforms, productivity tools — any app needing intent-aware retrieval.
-
----
-
 ## Feedback Mechanism
 
 Provide feedback on extracted memories to improve system quality over time.