moving out outdated js docs

olddocs/js/lessons/glowing-sword/challenges.md

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+# glowing sword challenges
+
+Coding challenges for the glowing sword tutorial. #docs
+
+## Before we get started
+
+Complete the [glowing sword](/lessons/glowing-sword/activity) activity and your code will look like this:
+
+```
+basic.plotImage(`
+. . . . #
+# . . # .
+. # # . .
+. # # . .
+# . . # .
+`)
+led.fadeOut(700)
+```
+
+### Challenge 1
+
+Now, let's add `basic->pause(1000)` after the fade in so that there will be a 1000 millisecond (1 second) delay after the fade out.
+
+```
+basic.plotImage(`
+. . . . #
+# . . # .
+. # # . .
+. # # . .
+# . . # .
+`)
+led.fadeOut(700)
+basic.pause(1000) // ***
+```
+
+* `run main` the code to see if it works as expected.
+
+### Challenge 2
+
+### @video td/videos/glowing-sword-2
+
+After the pause, let's add `led->fade in(2000)` so that we can create a glowing effect.
+
+```
+basic.plotImage(`
+. . . . #
+# . . # .
+. # # . .
+. # # . .
+# . . # .
+`)
+led.fadeOut(700)
+basic.pause(1000)
+led.fadeIn(2000) // ***
+```
+
+* `run main` the code to see if it works as expected.
+
+### Challenge 3
+
+Now add another `basic->pause(1000)` and `led->fade out(900)` so that the sword can fade out again.
+