Skip useless SMBus read in lm92_detect.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2912 7894878c-1315-0410-8ee3-d5d059ff63e0

prog/detect/sensors-detect

@@ -3035,7 +3035,6 @@ sub lm92_detect
 {
   my ($chip, $file, $addr) = @_;
 
-  my $cur = i2c_smbus_read_word_data($file, 0x00);
   my $conf = i2c_smbus_read_byte_data($file, 0x01);
   my $hyst = i2c_smbus_read_word_data($file, 0x02);
   my $crit = i2c_smbus_read_word_data($file, 0x03);