configs/qemu_ppc_virtex_ml507: remove defconfig

Support for this board was removed in Linux upstream [1] since Xilinx
new design tools dropped these platforms in 2013, along with all
PPC405/PPC440 new designs. They are not maintained nor tested anymore.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7ade8495dcfd788a76e6877c9ea86f5207369ea4

Signed-off-by: Geoffrey Le Gourriérec <geoffrey.legourrierec@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/qemu/ppc-virtex-ml507/linux.config

@@ -1,36 +0,0 @@
-CONFIG_44x=y
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_SLAB=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-# CONFIG_EBONY is not set
-CONFIG_XILINX_VIRTEX440_GENERIC_BOARD=y
-CONFIG_MATH_EMULATION=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=8192
-CONFIG_XILINX_SYSACE=y
-CONFIG_NETDEVICES=y
-CONFIG_SERIO_XILINX_XPS_PS2=y
-CONFIG_SERIAL_8250=y
-CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_SERIAL_UARTLITE=y
-CONFIG_SERIAL_UARTLITE_CONSOLE=y
-CONFIG_SERIAL_OF_PLATFORM=y
-CONFIG_XILINX_HWICAP=y
-CONFIG_GPIOLIB=y
-CONFIG_GPIO_SYSFS=y
-CONFIG_GPIO_XILINX=y
-CONFIG_FB=y
-CONFIG_FB_XILINX=y
-CONFIG_FRAMEBUFFER_CONSOLE=y
-CONFIG_EXT4_FS=y
-CONFIG_AUTOFS4_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_TMPFS=y

board/qemu/ppc-virtex-ml507/readme.txt

@@ -1,5 +0,0 @@
-Run the emulation with:
-
- qemu-system-ppc -M virtex-ml507 -kernel output/images/vmlinux -m 256 -nographic -append "console=ttyS0" -dtb output/images/virtex440-ml507.dtb # qemu_ppc_virtex_ml507_defconfig
-
-The login prompt will appear in the terminal that started Qemu.