Revert "Health check responder (#2636)" (#2638)

This reverts commit 164fefb.

Author: oliverchang

configs/test/gce/linux-init-ml-with-gpu.yaml

@@ -31,7 +31,6 @@ bootcmd:
   - echo never > /sys/kernel/mm/transparent_hugepage/defrag
   - echo core > /proc/sys/kernel/core_pattern # for AFL
   - swapon -a
-  - iptables -w -A INPUT -p tcp --dport 7123 -j ACCEPT # health check port
 
   # Note that NVIDIA_DRIVER_VERSION can be used with a particular CUDA version
   # only, e.g. CUDA 9.0 needs drivers version 384.130. CUDA and TensorFlow are

configs/test/gce/linux-init.yaml

@@ -31,7 +31,6 @@ bootcmd:
   - echo never > /sys/kernel/mm/transparent_hugepage/defrag
   - echo core > /proc/sys/kernel/core_pattern # for AFL
   - swapon -a
-  - iptables -w -A INPUT -p tcp --dport 7123 -j ACCEPT # health check port
 
 write_files:
   - path: /etc/systemd/system/clusterfuzz.service

src/clusterfuzz/_internal/system/process_handler.py

@@ -649,16 +649,3 @@ def terminate_processes_matching_cmd_line(match_strings,
     if any(x in process_path for x in match_strings):
       if not any([x in process_path for x in exclude_strings]):
         terminate_process(process_info['pid'], kill)
-
-
-def scripts_are_running(expected_scripts):
-  """Check if all target scripts are running as expected."""
-  scripts_left = expected_scripts.copy()
-  for process in psutil.process_iter():
-    for expected_script in scripts_left:
-      if any(expected_script == os.path.basename(cmdline)
-             for cmdline in process.cmdline()):
-        scripts_left.remove(expected_script)
-        if not scripts_left:
-          return True
-  return False

src/clusterfuzz/_internal/tests/core/bot/startup/health_check_responder_test.py

@@ -25,8 +25,6 @@
 import sys
 import time
 
-from health_check_responder import run_server as run_health_responder_server
-
 from clusterfuzz._internal.base import dates
 from clusterfuzz._internal.base import tasks
 from clusterfuzz._internal.datastore import data_handler
@@ -115,8 +113,6 @@ def main():
   except Exception:
     logs.log_error('Failed to beat.')
 
-  run_health_responder_server()
-
   time.sleep(data_types.HEARTBEAT_WAIT_INTERVAL)