chore(gitops): delete orphaned leads manifests

leads-deployment.yaml and leads-service.yaml were already removed from
kustomization.yaml's resources list in the prior commit (e51f199) —
these were just the leftover, unreferenced files themselves.

apps/nxtgauge-backend-rust/base/leads-deployment.yaml

@@ -1,56 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: nxtgauge-rust-leads
-  labels:
-    app: nxtgauge-rust-leads
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: nxtgauge-rust-leads
-  template:
-    metadata:
-      labels:
-        app: nxtgauge-rust-leads
-    spec:
-      imagePullSecrets:
-        - name: forgejo-regcred
-      containers:
-        - name: leads
-          image: ci.nxtgauge.com/ashwin/nxtgauge-rust-leads:latest
-          imagePullPolicy: Always
-          ports:
-            - containerPort: 9118
-              name: http
-          envFrom:
-            - configMapRef:
-                name: nxtgauge-backend-rust-config
-            - secretRef:
-                name: nxtgauge-backend-rust-secrets
-          env:
-            - name: PORT
-              value: "9118"
-          readinessProbe:
-            httpGet:
-              path: /health
-              port: 9118
-            initialDelaySeconds: 10
-            periodSeconds: 10
-            timeoutSeconds: 3
-            failureThreshold: 3
-          livenessProbe:
-            httpGet:
-              path: /health
-              port: 9118
-            initialDelaySeconds: 20
-            periodSeconds: 20
-            timeoutSeconds: 3
-            failureThreshold: 5
-          resources:
-            requests:
-              cpu: 50m
-              memory: 64Mi
-            limits:
-              cpu: 500m
-              memory: 256Mi

apps/nxtgauge-backend-rust/base/leads-service.yaml

@@ -1,16 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: nxtgauge-rust-leads
-  namespace: nxtgauge
-  labels:
-    app: nxtgauge-rust-leads
-spec:
-  type: ClusterIP
-  selector:
-    app: nxtgauge-rust-leads
-  ports:
-    - name: http
-      port: 9118
-      targetPort: 9118
-      protocol: TCP