ARM: omap2plus_defconfig: Drop unneeded options

These are no longer needed because:

- PCI_DRA7XX_HOST selects PCI_DRA7XX

- USB_NET_QMI_WWAN selects USB_WDM

- USB_PHY selects EXTCON

- IIO_CONFIGFS selects CONFIGFS_FS

- TIMER_STATS option no longer exists

- CRYPTO_SHA1_ARM_NEON selects CRYPTO_SHA1_ARM

Signed-off-by: Tony Lindgren <tony@atomide.com>