Removed readline import from pyocd-tool.
Removed readline import from pyocd-tool.

Signed-off-by: Chris Reed <ddbbf6166888b293a1c3f06933a7a3227dbb7a9f@freescale.com>

tgarc/pyOCD,oliviermartin/pyOCD,devanlai/pyOCD,0xc0170/pyOCD,geky/pyOCDgdb,c1728p9/pyOCD,pyocd/pyOCD,mesheven/pyOCD,c1728p9/pyOCD,pyocd/pyOCD,matthewelse/pyOCD,adamgreen/pyOCD,bridadan/pyOCD,adamgreen/pyOCD,mesheven/pyOCD,tgarc/pyOCD,mbedmicro/pyOCD,mbedmicro/pyOCD,devanlai/pyOCD,tgarc/pyOCD,wjzhang/pyOCD,mesheven/pyOCD,molejar/pyOCD,oliviermartin/pyOCD,mbedmicro/pyOCD,wjzhang/pyOCD,molejar/pyOCD,devanlai/pyOCD,adamgreen/pyOCD,wjzhang/pyOCD,molejar/pyOCD,matthewelse/pyOCD,oliviermartin/pyOCD,c1728p9/pyOCD,bridadan/pyOCD,flit/pyOCD,matthewelse/pyOCD,bridadan/pyOCD,0xc0170/pyOCD,flit/pyOCD,0xc0170/pyOCD