eth/example: Use logging.getLogger instead of SimLog

Signed-off-by: Alex Forencich <alex@alexforencich.com>

src/eth/example/Arty/fpga/tb/fpga_core/test_fpga_core.py

@@ -15,7 +15,6 @@ import os
 import cocotb_test.simulator
 
 import cocotb
-from cocotb.log import SimLog
 from cocotb.clock import Clock
 from cocotb.triggers import RisingEdge, Combine
 
@@ -27,7 +26,7 @@ class TB:
     def __init__(self, dut, speed=100e6):
         self.dut = dut
 
-        self.log = SimLog("cocotb.tb")
+        self.log = logging.getLogger("cocotb.tb")
         self.log.setLevel(logging.DEBUG)
 
         cocotb.start_soon(Clock(dut.clk, 8, units="ns").start())