To remove all meta field icons follow the simple steps:

Go to WordPress Dashboard>>Divi>>Theme Options>>Custom CSS Write the following CSS :

.et_pb_post_extra.el_dbe_block_extended .post-meta .et-pb-icon {
 display: none;
 }

And, If you want to remove specific meta item like:

For author, icon use the following CSS

.et_pb_post_extra.el_dbe_block_extended .post-meta .author 
{
	 display: none;
}

For calendar, icon use the following CSS

.et_pb_post_extra.el_dbe_block_extended .post-meta .published 
{
	 display: none;
}

For comment, icon use the following CSS

.et_pb_post_extra.el_dbe_block_extended .post-meta .comments 
{
	 display: none;
}

Output: