Update separate-compilation.md

remove mention of text editor

sources/modules/compilation-model/separate-compilation.md

@@ -38,8 +38,7 @@ _Very brief introduction to the topic._
 
 A student: 
 
-1. needs to have the text editor skills to split a single-file program into multiple files.
-2. needs to be able to split function and classes into their declaration and definition. [[C++ object model: declarations]][1] [[C++ object model: Definitions]][2]
+1. needs to be able to split function and classes into their declaration and definition. [[C++ object model: declarations]][1] [[C++ object model: Definitions]][2]
 
 
 #### Student outcomes