config: Remove tmc interpolate setting from example configs

There is no reason to explicitly set the interpolate flag to true in
the example configs as that is already the default.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

config/generic-duet2-duex.cfg

@@ -96,7 +96,6 @@ position_max: 250
 [tmc2660 stepper_x]
 cs_pin: PD14 # X_SPI_EN Required for communication
 spi_bus: usart1 # All TMC2660 drivers are connected to USART1
-interpolate: True # 1/16 micro-steps interpolated to 1/256
 run_current: 1.000
 sense_resistor: 0.051
 idle_current_percent: 20
@@ -114,7 +113,6 @@ position_max: 210
 [tmc2660 stepper_y]
 cs_pin: PC9
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 idle_current_percent: 20
@@ -132,7 +130,6 @@ position_max: 200
 [tmc2660 stepper_z]
 cs_pin: PC10
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -147,7 +144,6 @@ rotation_distance: 8
 [tmc2660 stepper_z1]
 cs_pin: PD25
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -162,7 +158,6 @@ rotation_distance: 8
 [tmc2660 stepper_z2]
 cs_pin: PD26
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -177,7 +172,6 @@ rotation_distance: 8
 [tmc2660 stepper_z3]
 cs_pin: PB14
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -203,7 +197,6 @@ max_temp: 250
 [tmc2660 extruder]
 cs_pin: PC17
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -229,7 +222,6 @@ max_temp: 250
 [tmc2660 extruder1]
 cs_pin: PC25
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -255,7 +247,6 @@ max_temp: 250
 [tmc2660 extruder2]
 cs_pin: PD23
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051
 
@@ -281,7 +272,6 @@ max_temp: 250
 [tmc2660 extruder3]
 cs_pin: PD24
 spi_bus: usart1
-interpolate: True
 run_current: 1.000
 sense_resistor: 0.051