Bug 1596590 - remove unnecessary psutil 5.4.3 specification from desktop_unittest.py r=gbrown

Changes:

Remove the unnecessary psutil == 5.4.3 specifier in `desktop_unittest.py`.

This should be a safe change. Prior to this patch, in a given test task the virtrualenv initialization will first install `psutil==5.6.3`, then proceed to invoke `desktop_unittest.py` where the `psutil==5.4.3` version forces the uninstallation of the newer version to install the older version.

Differential Revision: https://phabricator.services.mozilla.com/D53302

--HG--
extra : moz-landing-system : lando

testing/mozharness/mozharness/base/python.py

@@ -490,7 +490,7 @@ class ResourceMonitoringMixin(PerfherderResourceOptionsMixin):
     def __init__(self, *args, **kwargs):
         super(ResourceMonitoringMixin, self).__init__(*args, **kwargs)
 
-        self.register_virtualenv_module('psutil>=3.1.1', method='pip',
+        self.register_virtualenv_module('psutil>=5.6.3', method='pip',
                                         optional=True)
         self.register_virtualenv_module('mozsystemmonitor==0.4',
                                         method='pip', optional=True)

testing/mozharness/scripts/desktop_unittest.py

@@ -331,7 +331,6 @@ class DesktopUnittest(TestingMixin, MercurialScript, MozbaseMixin,
     def _pre_create_virtualenv(self, action):
         dirs = self.query_abs_dirs()
 
-        self.register_virtualenv_module('psutil==5.4.3')
         self.register_virtualenv_module(name='mock')
         self.register_virtualenv_module(name='simplejson')
 

testing/tools/websocketprocessbridge/websocketprocessbridge_requirements.txt

@@ -6,7 +6,7 @@ twisted==10.2.0
 # websocket adapter for twisted, might be built into twisted someday
 txws==0.9.1
 
-psutil==5.4.3
+psutil>=5.6.3
 
 # Needed by iceserver
 ipaddr==2.1.11