remove old ralink 3.8 patches

...s/patches-3.8/001-mips-add-cp0-compare-irq-function.patch

...-3.8/010-mtd_fix_cfi_cmdset_0002_erase_status_check.patch

...atches-3.8/011-mtd-cfi_cmdset_0002-force-word-write.patch

target/linux/ramips/patches-3.8/100-mips-ralink-core.patch

...ux/ramips/patches-3.8/101-rt288x_serial_driver_hack.patch

...linux/ramips/patches-3.8/102-rt288x-pci-driver-hook.patch

target/linux/ramips/patches-3.8/103-ethernet.patch

...linux/ramips/patches-3.8/104-ramips-watchdog-driver.patch

target/linux/ramips/patches-3.8/105-ramips-spi-driver.patch

target/linux/ramips/patches-3.8/105-usb_dwc_otg.patch

target/linux/ramips/patches-3.8/106-rt3883-pci-support.patch