simplifyposteditlist.php

<?php
/*
Plugin Name: Simplify Post Edit List
Description: Show only the author's posts in the edit list
Version: 0.1
License: GPL
Author: Sarah Gooding
*/

function mypo_parse_query_useronly( $wp_query ) {
    if ( strpos( $_SERVER[ 'REQUEST_URI' ], '/wp-admin/edit.php' ) !== false ) {
        if ( !current_user_can( 'update_core' ) ) {
            global $current_user;
            $wp_query->set( 'author', $current_user->id );
        }
    }
}

add_filter('parse_query', 'mypo_parse_query_useronly' );

// Remove Post Counts

// Create a specific hook
add_filter('views_edit-post', 'custom_editor_counts', 10, 1);

function custom_editor_counts($views) {
// var_dump($views) to check other array elements that you can hide.
unset($views['all']);
unset($views['publish']);
unset($views['pending']);
unset($views['trash']);
return $views;
}

?>