Question about GNU as assembler listing

I am using the GNU as assembler. I am producing a listing with the following command:

as -al first.s

The output listing is:

 1              	.globl _start
 2              	.section .text
 3              	
 4              	_start:
 5 0000 48C7C03C 	  movq $60, %rax
 5      000000
 6 0007 48C7C707 	  movq $7, %rdi
 6      000000
 7 000e 0F05     	  syscall
 8              	

What is the 000000 on the duplicate line 5 and line 6? Is there a way to get rid of it?