removed useless single include in configure-environment task

jupyterhub-kubespawner/roles/configure-environment/tasks/configure-envvar.yml

-- name: generate service ips string
-  shell: |
-    printf -v service '%s,' 10.244.0.{1..253}
-    echo ${service%?}
-  args:
-    executable: /bin/bash
-  register: service_ips
-
-- name: configure no_proxy environment variable
-  set_fact:
-    configured_no_proxy: "{{ master_ip }},{{ nodes_ip }},{{ service_ips.stdout }},{{ pod_network_cidr }},10.96.0.0/12,{{ lookup('env','no_proxy') }}"

jupyterhub-kubespawner/roles/configure-environment/tasks/main.yml

 ---
 # tasks file for configure-environment
-- include: configure-envvar.yml
+- name: generate service ips string
+  shell: |
+    printf -v service '%s,' 10.244.0.{1..253}
+    echo ${service%?}
+  args:
+    executable: /bin/bash
+  register: service_ips
+
+- name: configure no_proxy environment variable
+  set_fact:
+    configured_no_proxy: "{{ master_ip }},{{ nodes_ip }},{{ service_ips.stdout }},{{ pod_network_cidr }},10.96.0.0/12,{{ lookup('env','no_proxy') }}"