Remove tokenCache documentation and examples (#2801)

Author: jhrozek

docs/operator/virtualmcpserver-api.md

@@ -249,40 +249,6 @@ spec:
           dependsOn: ["confirm_deploy"]
 ```
 
-### `.spec.tokenCache` (optional)
-
-Configures token caching behavior.
-
-**Type**: `TokenCacheConfig`
-
-**Fields**:
-- `provider` (string, optional, default: "memory"): Cache provider type (`memory` or `redis`)
-- `memory` (MemoryCacheConfig, optional): In-memory cache configuration
-- `redis` (RedisCacheConfig, optional): Redis cache configuration
-
-**Example (memory)**:
-```yaml
-spec:
-  tokenCache:
-    provider: memory
-    memory:
-      maxEntries: 1000
-      ttlOffset: 5m
-```
-
-**Example (redis)**:
-```yaml
-spec:
-  tokenCache:
-    provider: redis
-    redis:
-      address: redis:6379
-      db: 0
-      passwordRef:
-        name: redis-secret
-        key: password
-```
-
 ### `.spec.operational` (optional)
 
 Defines operational settings like timeouts and health checks.
@@ -478,13 +444,6 @@ spec:
             description: "{{.steps.fetch_logs.output}}"
           dependsOn: ["fetch_logs"]
 
-  # Token caching
-  tokenCache:
-    provider: memory
-    memory:
-      maxEntries: 1000
-      ttlOffset: 5m
-
   # Operational settings
   operational:
     timeouts:

examples/vmcp-config.yaml

@@ -91,14 +91,6 @@ outgoing_auth:
     #     audience: "jira-api"  # Token audience for Jira API
     #     scopes: ["read:jira-work", "write:jira-work"]
 
-# ===== TOKEN CACHING =====
-# Token cache configuration
-token_cache:
-  provider: memory  # Options: memory | redis | custom
-  config:
-    max_entries: 1000
-    ttl_offset: "5m"  # Refresh tokens 5 minutes before expiry
-
 # ===== TOOL AGGREGATION =====
 aggregation:
   # Conflict resolution strategy