我有这个txt文件:
c("\\f0\\fs24 \\cf0 <message messageId=\"12450\" replyToMessageId=\"0\" receivedAt=\"2023-06-12T08:42:31Z\" text=\"> GBPJPY SELL 175.41

SL: 175.955
TP: 174.382
--Trade by Grace\" />\\",
"", " <message messageId=\"12448\" replyToMessageId=\"12442\" receivedAt=\"2023-06-12T02:38:51Z\" text=\"> SET SL TO 1.32979\" />\\",
" <message messageId=\"12447\" replyToMessageId=\"12442\" receivedAt=\"2023-06-12T02:38:51Z\" text=\"> USDCAD CLOSE HALF 33 PIPS PROFIT \" />\\",
" <message messageId=\"12446\" replyToMessageId=\"12430\" receivedAt=\"2023-06-12T00:42:27Z\" text=\"> EURAUD RUNNING 105+ PIPS PROFIT 
SMALL LOT HOLDER CAN FULL CLOSE WITH PROFIT \" />\\",
" <message messageId=\"12442\" replyToMessageId=\"0\" receivedAt=\"2023-06-09T14:42:21Z\" text=\"> USDCAD BUY 1.3328

SL: 1.31655
TP: 1.34473
--Trade by Jason\" />\\",
" <message messageId=\"12441\" replyToMessageId=\"12430\" receivedAt=\"2023-06-09T14:25:46Z\" text=\"> EURAUD CLOSE PARTIAL 69 PIPS PROFIT MOVE SL TO ENTRY\" />\\",
" <message messageId=\"12440\" replyToMessageId=\"12436\" receivedAt=\"2023-06-09T12:33:37Z\" text=\"> SET SL TO 175.401\" />\\",
" <message messageId=\"12439\" replyToMessageId=\"12436\" receivedAt=\"2023-06-09T12:33:36Z\" text=\"> GBPJPY CLOSE HALF 34 PIPS PROFIT \" />\\",
" <message messageId=\"12438\" replyToMessageId=\"12430\" receivedAt=\"2023-06-09T12:32:57Z\" text=\"> SET SL TO 1.60599\" />\\"
)
如何在不再次阅读文件的情况下删除前5行?