layerscape: remove CONFIG_LEGACY_PTY from kernel config

Having legacy PTYs enabled causes problems with procd-hotplug.

Signed-off-by: Daniel Golle <[email protected]>

target/linux/layerscape/armv7/config-4.14

@@ -419,8 +419,6 @@ CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_XZ is not set
 CONFIG_KEXEC=y
 CONFIG_KEXEC_CORE=y
-CONFIG_LEGACY_PTYS=y
-CONFIG_LEGACY_PTY_COUNT=256
 CONFIG_LIBFDT=y
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_LOCK_SPIN_ON_OWNER=y

target/linux/layerscape/armv8_64b/config-4.14

@@ -553,8 +553,6 @@ CONFIG_KEYBOARD_ATKBD=y
 CONFIG_KEYBOARD_GPIO=y
 CONFIG_KSM=y
 # CONFIG_LCD_CLASS_DEVICE is not set
-CONFIG_LEGACY_PTYS=y
-CONFIG_LEGACY_PTY_COUNT=16
 CONFIG_LIBCRC32C=y
 CONFIG_LIBFDT=y
 CONFIG_LOCALVERSION_AUTO=y