Remove the invalid entries from the example configuration file.

example.conf

@@ -22,7 +22,6 @@
 "gpu-fan" : "0-85,0-85,0-85,0-85",
 "gpu-memclock" : "860,825,835,875",
 "gpu-powertune" : "20,20,20,20",
-"gpu-vddc" : "0.000,0.000,0.000,0.000",
 "temp-cutoff" : "95,95,95,95",
 "temp-overheat" : "85,85,85,85",
 "temp-target" : "75,75,75,75",
@@ -37,8 +36,6 @@
 "retry-pause" : "5",
 "scan-time" : "60",
 "temp-hysteresis" : "3",
-"worksize" : "0",
 
-"shares" : "0",
 "kernel-path" : "/usr/local/bin"
 }