Remove the text-editor box-shadow (reverting) (#3615)

themes/tiddlywiki/snowwhite/base.tid

@@ -50,10 +50,6 @@ textarea.tc-edit-texteditor {
 	font-family: {{$:/themes/tiddlywiki/vanilla/settings/editorfontfamily}};
 }
 
-.tc-tiddler-frame.tc-tiddler-edit-frame iframe.tc-edit-texteditor {
-	<<box-shadow "1px 1px 5px rgba(0, 0, 0, 0.3)">>
-}
-
 canvas.tc-edit-bitmapeditor  {
 	<<box-shadow "2px 2px 5px rgba(0, 0, 0, 0.5)">>
 }