我有以下数据框：
Player_1 Player_2 Player_3 Player_4 Player_5 Player_6 Player_7 total_sal
1 Mike Reilly Andrew Harris RB 1 Dominque Rhymes Duron Carter BC D Shaquille Johnson 39084
2 Mike Reilly Andrew Harris RB 1 Dominque Rhymes Shaquille Johnson BC D Duron Carter 39084
3 Mike Reilly Andrew Harris RB 1 Duron Carter Shaquille Johnson BC D Dominque Rhymes 39084
4 Mike Reilly Andrew Harris RB 2 Dominque Rhymes Duron Carter BC D Shaquille Johnson 39084
5 Mike Reilly Andrew Harris RB 2 Dominque Rhymes Shaquille Johnson BC D Duron Carter 39084
6 Mike Reilly Andrew Harris RB 2 Duron Carter Shaquille Johnson BC D Dominque Rhymes 39084
我关心的是Player_1至Player_7列。我想删除数据框中的行，这些行中出现了相同的播放器组合。例如，在上面的第1行至第3行中，第4行至第6行在不同的列中显示了相同的玩家组合。我想知道是否存在一种方法可以检测并删除这些重复的行，因此在上面的示例中，最终的数据帧将只出现1-3行，而出现4-6行（与哪一行无关）。
使用的数据：
structure(list(X = c(29L, 32L, 34L, 44L, 47L, 49L), Player_1 = c("Mike Reilly",
"Mike Reilly", "Mike Reilly", "Mike Reilly", "Mike Reilly", "Mike Reilly"
), Player_2 = c("Andrew Harris", "Andrew Harris", "Andrew Harris",
"Andrew Harris", "Andrew Harris", "Andrew Harris"), Player_3 = c("RB 1",
"RB 1", "RB 1", "RB 2", "RB 2", "RB 2"), Player_4 = c("Dominque Rhymes",
"Dominque Rhymes", "Duron Carter", "Dominque Rhymes", "Dominque Rhymes",
"Duron Carter"), Player_5 = c("Duron Carter", "Shaquille Johnson",
"Shaquille Johnson", "Duron Carter", "Shaquille Johnson", "Shaquille Johnson"
), Player_6 = c("BC D", "BC D", "BC D", "BC D", "BC D", "BC D"
), Player_7 = c("Shaquille Johnson", "Duron Carter", "Dominque Rhymes",
"Shaquille Johnson", "Duron Carter", "Dominque Rhymes"), total_sal = c(39084L,
39084L, 39084L, 39084L, 39084L, 39084L)), row.names = c(NA, 6L
), class = "data.frame")