Remove unused function

Author: trowski

Zend/zend_fibers.c

@@ -196,12 +196,6 @@ void zend_fiber_stack_free(zend_fiber_stack *stack) /* {{{ */
 }
 /* }}} */
 
-const char *zend_fiber_backend_info(void) /* {{{ */
-{
-	return "assembler (boost.context v1.76.0)";
-}
-/* }}} */
-
 static ZEND_NORETURN void zend_fiber_trampoline(transfer_t transfer) /* {{{ */
 {
 	zend_fiber_context *context = transfer.data;

Zend/zend_fibers.h

@@ -96,8 +96,6 @@ static const zend_uchar ZEND_FIBER_STATUS_SHUTDOWN  = 0x10;
 
 static const zend_uchar ZEND_FIBER_STATUS_FINISHED  = 0x1c;
 
-const char *zend_fiber_backend_info(void);
-
 ZEND_API zend_bool zend_fiber_init_context(zend_fiber_context *context, zend_fiber_coroutine coroutine, size_t stack_size);
 ZEND_API void zend_fiber_destroy_context(zend_fiber_context *context);