nx: remove old 4.9 props

properties.mk

@@ -24,18 +24,6 @@ PRODUCT_SYSTEM_EXT_PROPERTIES += \
 PRODUCT_SYSTEM_EXT_PROPERTIES += \
     atv.setup.bt_remote_pairing=false
 
-# Graphics
-ifneq ($(filter 4.9 5.10, $(TARGET_KERNEL_VERSION)),)
-PRODUCT_PROPERTY_OVERRIDES += \
-    debug.sf.latch_unsignaled=1 \
-    ro.surface_flinger.force_hwc_copy_for_virtual_displays=true \
-    ro.surface_flinger.max_frame_buffer_acquired_buffers=3 \
-    ro.surface_flinger.max_virtual_display_dimension=4096
-endif
-
-# HWC
-PRODUCT_PROPERTY_OVERRIDES += \
-    persist.vendor.tegra.stb.mode=0
 
 # USB configfs
 PRODUCT_PROPERTY_OVERRIDES += \