Invert logic of endstops

- Also comment out endstop of stepper_z1, rely on stepper_z
- #163 (comment)

Geonosis/Klipper/config/generic-bigtreetech-manta-mp8-V2_0.cfg

@@ -12,7 +12,7 @@ dir_pin: PE5
 enable_pin: !PC14
 microsteps: 16
 rotation_distance: 40
-endstop_pin: ^PF4
+endstop_pin: ^!PF4
 position_endstop: 0
 position_max: 235
 homing_speed: 50
@@ -24,7 +24,7 @@ dir_pin: PE1
 enable_pin: !PE4
 microsteps: 16
 rotation_distance: 40
-endstop_pin: ^PF3
+endstop_pin: ^!PF3
 position_endstop: 0
 position_max: 235
 homing_speed: 50
@@ -36,7 +36,7 @@ dir_pin: !PB7
 enable_pin: !PE0
 microsteps: 16
 rotation_distance: 8
-endstop_pin: ^PF2
+endstop_pin: ^!PF2
 position_endstop: 0
 position_max: 270
 position_min: -5.0
@@ -54,7 +54,7 @@ dir_pin: PB3
 enable_pin: !PB6
 microsteps: 16
 rotation_distance: 8
-endstop_pin: ^PF1
+#j#endstop_pin: ^PF1
 #j#position_endstop: 0
 #j#position_max: 270
 #j#position_min: -5.0