staging: mt7621-pci: delete no more needed 'mt7621_reset_port'

After review all the resets at the beggining the function
'mt7621_reset_port' is not needed anymore. Hence delete it
and its uses.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200313200913.24321-7-sergio.paracuellos@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-pci/pci-mt7621.c

@@ -255,13 +255,6 @@ static inline void mt7621_control_deassert(struct mt7621_pcie_port *port)
 		reset_control_assert(port->pcie_rst);
 }
 
-static void mt7621_reset_port(struct mt7621_pcie_port *port)
-{
-	mt7621_control_assert(port);
-	msleep(100);
-	mt7621_control_deassert(port);
-}
-
 static void setup_cm_memory_region(struct mt7621_pcie *pcie)
 {
 	struct resource *mem_resource = &pcie->mem;
@@ -427,12 +420,6 @@ static int mt7621_pcie_init_port(struct mt7621_pcie_port *port)
 	u32 slot = port->slot;
 	int err;
 
-	/*
-	 * Any MT7621 Ralink pcie controller that doesn't have 0x0101 at
-	 * the end of the chip_id has inverted PCI resets.
-	 */
-	mt7621_reset_port(port);
-
 	err = phy_init(port->phy);
 	if (err) {
 		dev_err(dev, "failed to initialize port%d phy\n", slot);