libdmabufinfo: Remove declaration of ReadDmaBufPss am: 42e2c813ec

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/3465257

Change-Id: Id2e2efbc2a9adc1d1d3c79f9fc4fe7098f4c8cb3
Signed-off-by: Automerger Merge Worker <[email protected]>