vm/filecopy: remove duplicated error reporting
Each write_all is check for errors (when it makes sense) with own perror call, so don't dupplicate messages.
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				| @ -42,7 +42,6 @@ int write_all(int fd, void *buf, int size) | |||||||
| 		if (ret == -1 && errno == EINTR) | 		if (ret == -1 && errno == EINTR) | ||||||
| 			continue; | 			continue; | ||||||
| 		if (ret <= 0) { | 		if (ret <= 0) { | ||||||
| 			perror_wrapper("write"); |  | ||||||
| 			return 0; | 			return 0; | ||||||
| 		} | 		} | ||||||
| 		written += ret; | 		written += ret; | ||||||
|  | |||||||
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	 Marek Marczykowski
						Marek Marczykowski