Docs: Remove @static notations from method DocBlocks in wp-includes/* classes.

This tag has been used in the past, but should no longer be used. Just using the `static` keyword in code is enough for PhpDocumentor on PHP5+ to recognize static variables and methods, and PhpDocumentor will mark them as static.

Props birgire.
See #42803.

git-svn-id: https://develop.svn.wordpress.org/trunk@42746 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-image-editor.php

@@ -34,7 +34,6 @@ abstract class WP_Image_Editor {
 	 *
 	 * @since 3.5.0
 	 *
-	 * @static
 	 * @abstract
 	 *
 	 * @param array $args
@@ -50,7 +49,6 @@ abstract class WP_Image_Editor {
 	 *
 	 * @since 3.5.0
 	 *
-	 * @static
 	 * @abstract
 	 *
 	 * @param string $mime_type
@@ -430,8 +428,6 @@ abstract class WP_Image_Editor {
 	 *
 	 * @since 3.5.0
 	 *
-	 * @static
-	 *
 	 * @param string $extension
 	 * @return string|false
 	 */
@@ -458,8 +454,6 @@ abstract class WP_Image_Editor {
 	 *
 	 * @since 3.5.0
 	 *
-	 * @static
-	 *
 	 * @param string $mime_type
 	 * @return string|false
 	 */