Update README.md

Author: SophieDeBenedetto

README.md

@@ -28,12 +28,6 @@ Failures:
 Finished in 0.00048 seconds
 2 examples, 1 failure
 ```
-However, if you get:
-
-```bash
--bash: learn: command not found
-```
-Then you need to install Learn. Do that via: `gem install learn-co` in your command line.
 
 To solve this test failure, create a local variable `greeting` in the `variable.rb` file. Set `greeting` equal to the string `"Hello World"`. Run `learn` to see if you did this correctly.