remove linksto lessons from references

docs/reference/input/acceleration.md

@@ -35,9 +35,6 @@ basic.forever(() => {
 })
 ```
 
-### Lessons
-
-[zoomer](/lessons/zoomer)
 
 ### See also
 

docs/reference/input/button-is-pressed.md

@@ -33,10 +33,6 @@ basic.forever(() => {
 })
 ```
 
-### Lessons
-
-[zoomer](/lessons/zoomer)
-
 ### See also
 
 [on button pressed](/reference/input/on-button-pressed), [if](/reference/logic/if), [forever](/reference/basic/forever)

docs/reference/input/compass-heading.md

@@ -59,10 +59,6 @@ micro:bit.
 If you are calibrating or using the compass near metal, it might
 confuse the micro:bit.
 
-### Lessons
-
-[compass](/lessons/compass)
-
 ### See also
 
 [acceleration](/reference/input/acceleration)

docs/reference/input/light-level.md

@@ -43,8 +43,6 @@ basic.forever(() => {
 })
 ```
 
-### Lessons
-
 ### See also
 
 [acceleration](/reference/input/acceleration), [compass-heading](/reference/input/compass-heading)

docs/reference/input/on-button-pressed.md

@@ -41,10 +41,6 @@ Otherwise, sometimes they would show a `0`.
 
 ### ~
 
-### Lessons
-
-[smiley](/lessons/smiley), [answering machine](/lessons/answering-machine), [screen wipe](/lessons/screen-wipe), [rotation animation](/lessons/rotation-animation)
-
 ### See also
 
 [button is pressed](/reference/input/button-is-pressed), [forever](/reference/basic/forever), [random](/reference/math/math)

docs/reference/input/on-gesture.md

@@ -20,7 +20,3 @@ input.onGesture(Gesture.Shake,() => {
 })
 ```
 
-## Lessons
-
-[bounce image](/lessons/bounce-image)
-

docs/reference/input/on-pin-pressed.md

@@ -36,10 +36,6 @@ input.onPinPressed(TouchPin.P0, () => {
 })
 ```
 
-### Lessons
-
-[love meter](/lessons/love-meter)
-
 ### See also
 
 [BBC micro:bit pins](/device/pins), [pin is pressed](/reference/input/pin-is-pressed), [analog read pin](/reference/pins/analog-read-pin), [analog write pin](/reference/pins/analog-write-pin), [digital read pin](/reference/pins/digital-read-pin), [digital write pin](/reference/pins/digital-write-pin)

docs/reference/input/running-time.md

@@ -24,9 +24,6 @@ input.onButtonPressed(Button.B, () => {
 })
 ```
 
-### Lessons
-
-[speed button](/lessons/speed-button)
 
 ### See also
 

docs/reference/input/temperature.md

@@ -52,8 +52,6 @@ better thermometer.
 
 ### ~
 
-### Lessons
-
 ### See also
 
 [compass-heading](/reference/input/compass-heading), [acceleration](/reference/input/acceleration)