MAINTAINERS: Remove duplicated entry for ehci-zynq.c

ehci-zynq.c is assigned to Zynq and ZynqMP that's why remove one.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/d97779178fa56f1c6af40f5604b0bf349002cd36.1646639027.git.michal.simek@xilinx.com
diff --git a/MAINTAINERS b/MAINTAINERS
index bb6ea06..c58947f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -656,7 +656,6 @@
 F:	drivers/spi/zynq_qspi.c
 F:	drivers/spi/zynq_spi.c
 F:	drivers/timer/cadence-ttc.c
-F:	drivers/usb/host/ehci-zynq.c
 F:	drivers/video/seps525.c
 F:	drivers/watchdog/cdns_wdt.c
 F:	include/zynqmppl.h