remove linksto lessons from references

docs/reference/basic/clear-screen.md

@@ -21,10 +21,6 @@ basic.showLeds(`
 basic.clearScreen()
 ```
 
-### Lessons
-
-[blink](/lessons/blink), [flashing heart](/lessons/flashing-heart), [screen wipe](/lessons/screen-wipe)
-
 ### See also
 
 [set brightness](/reference/led/set-brightness), [unplot](/reference/led/unplot), [plot](/reference/led/plot), [Image](/reference/images/image), [clear](/reference/basic/clear-screen)

docs/reference/basic/forever.md

@@ -63,10 +63,6 @@ input.onButtonPressed(Button.A, () => {
 })
 ```
 
-### Lessons
-
-[blink](/lessons/blink), [snowflake-fall](/lessons/snowflake-fall), [flashing-heart](/lessons/flashing-heart)
-
 ### See also
 
 [while](/reference/loops/while), [on button pressed](/reference/input/on-button-pressed), [in background](/reference/control/in-background)

docs/reference/basic/pause.md

@@ -24,10 +24,6 @@ for (let i = 0; i < 5; i++) {
 }
 ```
 
-### Lessons
-
-[blink](/lessons/blink), [lucky 7](/lessons/lucky-7), [smiley](/lessons/smiley), [flashing heart](/lessons/flashing-heart)
-
 ### See also
 
 [while](/reference/loops/while), [running time](/reference/input/running-time), [for](/reference/loops/for)

docs/reference/basic/show-animation.md

@@ -62,8 +62,3 @@ basic.showAnimation(`
 Use [forever](/reference/basic/forever) to show an animation over and over.
 
 ### ~
-
-### Lessons
-
-[smiley](/lessons/smiley), [snowflake fall](/lessons/snowflake-fall), [rotation animation](/lessons/rotation-animation)
-

docs/reference/basic/show-leds.md

@@ -36,10 +36,6 @@ basic.showLeds(`
 
 If you are programming in JavaScript, `#` means an LED that is turned on and `.` means an LED that is turned off.
 
-### Lessons
-
-[smiley](/lessons/smiley), [flashing heart](/lessons/flashing-heart), [magic logo](/lessons/magic-logo)
-
 ### See also
 
 [plot leds](/reference/led/plot-leds), [show animation](/reference/basic/show-animation)

docs/reference/basic/show-number.md

@@ -42,10 +42,6 @@ for (let i = 0; i < 6; i++) {
 * Use [show string](/reference/basic/show-string) to show a [String](/reference/types/string) with letters on the screen.
 * Use [show animation](/reference/basic/show-animation) to show a group of pictures on the screen, one after another.
 
-### Lessons
-
-* [lucky 7](/lessons/lucky-7)
-
 ### See also
 
 [show string](/reference/basic/show-string), [show animation](/reference/basic/show-animation), [Number](/reference/types/number), [math library](/reference/math)

docs/reference/basic/show-string.md

@@ -31,10 +31,6 @@ basic.showString(s)
 * Use [show number](/reference/basic/show-number) to show a number on the [LED screen](/device/screen).
 * Use [show animation](/reference/basic/show-animation) to show a group of pictures on the screen, one after another.
 
-### Lessons
-
-[answering machine](/lessons/answering-machine), [rock paper scissors](/lessons/rock-paper-scissors), [love meter](/lessons/love-meter)
-
 ### See also
 
 [String](/reference/types/string), [show number](/reference/basic/show-number), [show animation](/reference/basic/show-animation)