I want to know could I remove all toc_marker 's entries from toc.ncx file
Usually it looks like
|<content src="name_name.xhtml#toc_marker-5" />|
and such toc_marker 's can be 10, 20, 100.. depending on amount of xhtml files in ePub.
Can I directly create a stroke <content src="name_name.xhtml"/> from Indesign?
InDesign has no EPUB or HTML editing capabilities. You'll need to use a text editor, or an XML editor like Oxygen.