Bootstrap/Load: Revert the is_*_admin_screen() aliases for is_*_admin() function family.

After some further discussion, it is apparent that the added clarity was subjective, and the `_screen` suffix may not always be appropriate, e.g. in Ajax context. To address any confusion with the existing names, the documentation for these functions can be updated instead.

Additionally, the `is_super_admin_user()` alias for `is_super_admin()` is reverted as well, which may be reconsidered in the future.

Follow-up to [54259].

Props azaozz, jrf, johnbillion, manfcarlo, Clorith.
See #56400.

git-svn-id: https://develop.svn.wordpress.org/trunk@54332 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/capabilities.php

@@ -1084,22 +1084,6 @@ function get_super_admins() {
 	}
 }
 
-/**
- * Determines whether user is a site admin.
- *
- * @since 6.1.0
- *
- * This function is an alias for is_super_admin().
- *
- * @see is_super_admin()
- *
- * @param int|false $user_id Optional. The ID of a user. Defaults to false, to check the current user.
- * @return bool Whether the user is a site admin.
- */
-function is_super_admin_user( $user_id = false ) {
-	return is_super_admin( $user_id );
-}
-
 /**
  * Determines whether user is a site admin.
  *

src/wp-includes/load.php

@@ -1154,21 +1154,6 @@ function is_login_screen() {
 	return false !== stripos( wp_login_url(), $_SERVER['SCRIPT_NAME'] );
 }
 
-/**
- * Determines whether the current request is for an administrative interface page.
- *
- * This function is an alias for is_admin().
- *
- * @since 6.1.0
- *
- * @see is_admin()
- *
- * @return bool True if inside WordPress administration interface, false otherwise.
- */
-function is_admin_screen() {
-	return is_admin();
-}
-
 /**
  * Determines whether the current request is for an administrative interface page.
  *
@@ -1195,21 +1180,6 @@ function is_admin() {
 	return false;
 }
 
-/**
- * Determines whether the current request is for a site's administrative interface.
- *
- * This function is an alias for is_blog_admin().
- *
- * @since 6.1.0
- *
- * @see is_blog_admin()
- *
- * @return bool True if inside WordPress site administration pages.
- */
-function is_site_admin_screen() {
-	return is_blog_admin();
-}
-
 /**
  * Determines whether the current request is for a site's administrative interface.
  *
@@ -1234,23 +1204,6 @@ function is_blog_admin() {
 	return false;
 }
 
-/**
- * Determines whether the current request is for the network administrative interface.
- *
- * e.g. `/wp-admin/network/`
- *
- * This function is an alias for is_network_admin().
- *
- * @since 6.1.0
- *
- * @see is_network_admin()
- *
- * @return bool True if inside WordPress network administration pages.
- */
-function is_network_admin_screen() {
-	return is_network_admin();
-}
-
 /**
  * Determines whether the current request is for the network administrative interface.
  *
@@ -1278,23 +1231,6 @@ function is_network_admin() {
 	return false;
 }
 
-/**
- * Determines whether the current request is for a user admin screen.
- *
- * e.g. `/wp-admin/user/`
- *
- * This function is an alias for is_user_admin().
- *
- * @since 6.1.0
- *
- * @see is_user_admin()
- *
- * @return bool True if inside WordPress user administration pages.
- */
-function is_user_admin_screen() {
-	return is_user_admin();
-}
-
 /**
  * Determines whether the current request is for a user admin screen.
  *