Revert "net: qcom/emac: configure the external phy to allow pause frames"

Revert "net: qcom/emac: configure the external phy to allow pause frames"

This reverts commit c8159214b975a24c8385ebeab45fdba01e5fc3ad.

With commit c1d13252d2d1 ("net: phy: phy drivers should not set
SUPPORTED_[Asym_]Pause"), phylib now handles automatically enabling
pause frame support in the PHY, and the MAC driver should follow suit.

Since the EMAC driver driver does this,  we no longer need to force
pause frames support.

Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>