Issue 22187: [sflow] Remove unnecessary 'config reload' call (sonic-net#21190)

There is an extra 'config reload' call in the test_sflow.py test setup
code. It was added as a workaround for a bug that was filed in 2019, and
the workaround was supposed to have been removed in 2021, but the
commend and the 'config reload' call are still there. The test passes
fine without it, and it adds several minutes of overhead.

Author: anders-nexthop

tests/sflow/test_sflow.py

@@ -112,16 +112,10 @@ def setup_ptf(ptfhost, collector_ports):
 
 
 def config_dut_ports(duthost, ports, vlan):
-    # https://github.com/sonic-net/sonic-buildimage/issues/2665
-    # Introducing config vlan member add and remove for the test port due to above mentioned PR.
-    # Even though port is deleted from vlan , the port shows its master as Bridge upon assigning ip address.
-    # Hence config reload is done as workaround. ##FIXME
     for i in range(len(ports)):
         duthost.command('config vlan member del %s %s' % (vlan, ports[i]), module_ignore_errors=True)
         duthost.command('config interface ip add %s %s/24' %
                         (ports[i], var['dut_intf_ips'][i]))
-    duthost.command('config save -y')
-    config_reload(duthost, config_source='config_db', wait=120)
     time.sleep(5)
 
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