Minor, remove .editorconfig hack

As vscode is going to support it soon

.editorconfig

@@ -8,11 +8,8 @@ insert_final_newline = true
 
 [*.{c,cc,h,hh}]
 tab_width = 8
-indent_style = tab
-# This should be the following but as VSCode and Atom don't support it, disabled for now
-# https://github.com/Microsoft/vscode/issues/44438
-# indent_size = 2
-# indent_style = space
+indent_size = 2
+indent_style = space
 
 [*.{py,sh}]
 indent_style = tab