T1569.002: fix psexec prereq install

[cnotin]

Remove unnecessary folder creation

Details:
We want psexec to be at (default value of psexec_exe):
C:\PSTools\PsExec.exe

But currently we find it under (yes there's a folder which name is "PsExec.exe"):
C:\PSTools\PsExec.exe\PsExec.exe

Testing:
Done manually

Associated Issues:
Same bug in T1028 but considering #1042 I didn't suggest to fix it there

[clr2of8]

Instead of removing this line:
New-Item -ItemType Directory ("#{psexec_exe}") -Force | Out-Null

Could you change it to:
New-Item -ItemType Directory (Split-Path "#{psexec_exe}") -Force | Out-Null

This will create the c:\PSTools directory if it doesn't exist and avoid an error.

[cnotin]

Done!
Good idea indeed I understand what was the original intent of this line ;)