#5: post_row_actions

post_row_actions.php

<?php
/**
 * Disable Quick Edit row action for posts
 * 
 * @see WP_Posts_List_Table::single_row()
 * 
 * @param array $actions An array of row actions, keys corresponding to the span class attribute of each element.
 * @param object $post The post object.
 *
 * @return array The row actions array. 
 */
function wpdocs_no_posts_quickedit( $actions, $post ) {
  // If the post_type is 'post', and the Quick Edit row action is set
	if ( 'post' == $post->post_type && isset( $actions['inline hide-if-no-js'] ) )
		unset( $actions['inline hide-if-no-js'] );

	return $actions;
}
add_filter( 'post_row_actions', 'wpdocs_no_posts_quickedit', 10, 2 );

http://fotd.werdswords.com/post_row_actions/