Remove inherit from object

tests/gmii/test_gmii.py

@@ -37,7 +37,7 @@ from cocotb.regression import TestFactory
 from cocotbext.eth import GmiiFrame, GmiiSource, GmiiSink
 
 
-class TB(object):
+class TB:
     def __init__(self, dut):
         self.dut = dut
 

tests/mii/test_mii.py

@@ -37,7 +37,7 @@ from cocotb.regression import TestFactory
 from cocotbext.eth import GmiiFrame, MiiSource, MiiSink
 
 
-class TB(object):
+class TB:
     def __init__(self, dut):
         self.dut = dut
 

tests/ptp_clock/test_ptp_clock.py

@@ -36,7 +36,7 @@ from cocotb.utils import get_sim_time
 from cocotbext.eth import PtpClock
 
 
-class TB(object):
+class TB:
     def __init__(self, dut):
         self.dut = dut
 

tests/rgmii/test_rgmii.py

@@ -37,7 +37,7 @@ from cocotb.regression import TestFactory
 from cocotbext.eth import GmiiFrame, RgmiiSource, RgmiiSink
 
 
-class TB(object):
+class TB:
     def __init__(self, dut):
         self.dut = dut
 

tests/xgmii/test_xgmii.py

@@ -38,7 +38,7 @@ from cocotb.regression import TestFactory
 from cocotbext.eth import XgmiiFrame, XgmiiSource, XgmiiSink
 
 
-class TB(object):
+class TB:
     def __init__(self, dut):
         self.dut = dut