There is no propery which allows you turn them off. Sorry for the inconvenience.
Please following the steps below
Step 1. Locate/open include_CuteEditor.asp
Step 2. Find the Private Sub BuildBottomBar()
Step 3. Remove the code below:
<img title="""&G_Str("Enlarge")&""" class=""CuteEditorButton"" onclick=""_Format("&obj_ID&",'sizeplus')"" type=""btn"" src="""&ProcessThemeWebPath("plus.gif")&""" border=""0"" /><img title="""&G_Str("Decrease")&""" class=""CuteEditorButton"" onclick=""_Format("&obj_ID&",'sizeminus')"" type=""btn"" src="""&ProcessThemeWebPath("minus.gif")&""" border=""0"" />
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx