Ahhh, yes. Had the same problem long time ago. It's very easy to fix.
Open "cockpit.ini"
Find an instruments section and add two strings (Hide1 and Hide2). Should look like this:
//Instrument[074]=cockpit_roll
//Instrument[075]=cockpit_pitch
/////////////////////////////////////////
Instrument[066]=Hide1
Instrument[067]=Hide2
Then go to the bottom of the file and add two sections (Hide1 and Hide2):
//[cockpit_pitch]
//Type=CONTROL_STICK_PITCH
//NodeName=main_panel
//MovementType=ROTATION_X
//Set[01].Position=5.0
//Set[01].Value=-1.0
//Set[02].Position=0.0
//Set[02].Value=0.0
//Set[03].Position=-5.0
//Set[03].Value=1.0
/////////////////////////////////
/////////////////////////////////
[Hide1]
Type=INACTIVE
NodeName=new_panel-line backup
[Hide2]
Type=INACTIVE
NodeName=new_panel-line copy 2
Save and close. That's all.