sm8450-common: Drop QSPM property

Change-Id: Ie9778b272e7e1bb60c33c8ac645f40854b395096

properties/vendor.prop

@@ -169,9 +169,6 @@ ro.vendor.extension_library=libqti-perfd-client.so
 vendor.pasr.activemode.enabled=false
 vendor.pasr.enabled=false
 
-# QSPM
-ro.vendor.qspm.enable=true
-
 # Radio
 persist.radio.multisim.config=dsds
 persist.vendor.radio.apm_sim_not_pwdn=1