Code Modernization: Remove obsolete code targeting PHP < 7.2.24.

Follow-up to [44488], [45262], [53426], [57985].

Props ayeshrajans, jrf.
See #61574.

git-svn-id: https://develop.svn.wordpress.org/trunk@58678 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/file.php

@@ -1402,30 +1402,6 @@ function verify_file_signature( $filename, $signatures, $filename_for_errors = f
 		);
 	}
 
-	// Check for an edge-case affecting PHP Maths abilities.
-	if (
-		! extension_loaded( 'sodium' ) &&
-		in_array( PHP_VERSION_ID, array( 70200, 70201, 70202 ), true ) &&
-		extension_loaded( 'opcache' )
-	) {
-		/*
-		 * Sodium_Compat isn't compatible with PHP 7.2.0~7.2.2 due to a bug in the PHP Opcache extension, bail early as it'll fail.
-		 * https://bugs.php.net/bug.php?id=75938
-		 */
-		return new WP_Error(
-			'signature_verification_unsupported',
-			sprintf(
-				/* translators: %s: The filename of the package. */
-				__( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ),
-				'<span class="code">' . esc_html( $filename_for_errors ) . '</span>'
-			),
-			array(
-				'php'    => PHP_VERSION,
-				'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ),
-			)
-		);
-	}
-
 	// Verify runtime speed of Sodium_Compat is acceptable.
 	if ( ! extension_loaded( 'sodium' ) && ! ParagonIE_Sodium_Compat::polyfill_is_fast() ) {
 		$sodium_compat_is_fast = false;

src/wp-cron.php

@@ -24,7 +24,7 @@
 }
 
 // Don't run cron until the request finishes, if possible.
-if ( PHP_VERSION_ID >= 70016 && function_exists( 'fastcgi_finish_request' ) ) {
+if ( function_exists( 'fastcgi_finish_request' ) ) {
 	fastcgi_finish_request();
 } elseif ( function_exists( 'litespeed_finish_request' ) ) {
 	litespeed_finish_request();