NO. There are no such option available in Gmail or in Gmail Labs .
None of the popular Gmail Greasemonkey scripts claim to do this.
The best you can do is write your own Greasemonkey script for this or suggest a Gmail Labs feature request here. If it's a popular request it might get implemented.
There are two ways to insert an image in the body of the mail:
drag-and-drop it from its folder to the desired position in the message (depending on your browser, it might or might not work);
enable the Insert image feature from the mail settings and click on the Insert image button (this option requires that the email is composed using Rich formatting).
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Best Answer
As we saw, at the moment there isn't a builtin way for doing that.
You can go for other solutions:
Use a user script manager with a small script that will just remove the suggested replies.
You can use this: