fix(keda): remove invalid spec.paths from HTTPScaledObject

HTTPScaledObject CRD (http.keda.sh/v1alpha1) does not support .spec.paths field.
Scaling now triggers on all HTTP requests to the host (health/liveness ignored via targetPendingRequests:1 + pollingInterval:10s).

Refs https://keda.sh/docs/scalers/http-addon/

infrastructure/gpus/base/keda-gpu-scaling/keda-a100.yaml

@@ -12,8 +12,7 @@ spec:
     apiVersion: apps/v1
     service: openclaw-brain-service
     port: 8000
-  paths:
-  - path: "^/v1/chat/completions"
+
   replicas:
     min: 0
     max: 1

infrastructure/gpus/base/keda-gpu-scaling/keda-vllm.yaml

@@ -12,8 +12,7 @@ spec:
     apiVersion: apps/v1
     service: rtx6000-brain-service
     port: 8000
-  paths:
-  - path: "^/v1/(chat/)?completions"
+
   replicas:
     min: 0
     max: 1