[Powertop] Please revert the workload patch

Hello.

Could you please revert the workload patch
(b45a38317777678b94cdf4cc81896e3a66db68bd) as it seems to try to
execute some random memory. When powertop is started as

./powertop

I see the following stack trace:

Breakpoint 1, system (line=0x7fffffffd440 "\020\020i") at pt-system.c:29
29      pt-system.c: No such file or directory.
(gdb) where
#0  system (line=0x7fffffffd440 "\020\020i") at pt-system.c:29
#1  0x0000000000456933 in one_measurement (seconds=20, workload=0x7fffffffd440 "\020\020i") at main.cpp:190
#2  0x00000000004572c2 in main (argc=1, argv=0x7fffffffe538) at main.cpp:455
(gdb) 

This shows up as a powertop beeing nonresponsive, flashing the
display excessively and warning about not managing to run the program.

/MF