remove index column from unseparable datasets

data/unseparable_data_1d.csv

@@ -1,101 +1,101 @@
-,y,x1,score
-0,1,0.587,-0.7562380000000006
-1,0,0.607,-0.6457180000000009
-2,1,0.921,1.0894459999999988
-3,0,0.292,-2.3864080000000003
-4,1,0.911,1.0341859999999992
-5,0,0.222,-2.7732280000000005
-6,1,0.936,1.1723359999999996
-7,0,0.462,-1.4469880000000002
-8,0,0.368,-1.9664320000000006
-9,0,0.213,-2.8229620000000004
-10,0,0.854,0.7192039999999986
-11,0,0.421,-1.6735540000000007
-12,0,0.701,-0.12627400000000089
-13,0,0.456,-1.4801440000000006
-14,0,0.842,0.6528919999999987
-15,0,0.282,-2.4416680000000004
-16,0,0.749,0.13897399999999926
-17,0,0.151,-3.1655740000000003
-18,0,0.3,-2.3422
-19,0,0.878,0.8518279999999994
-20,0,0.454,-1.4911960000000004
-21,1,0.678,-0.2533720000000006
-22,0,0.097,-3.463978
-23,0,0.032,-3.823168
-24,0,0.206,-2.861644
-25,0,0.335,-2.14879
-26,0,0.305,-2.3145700000000007
-27,1,0.98,1.4154799999999987
-28,0,0.026,-3.856324
-29,0,0.589,-0.7451860000000008
-30,0,0.297,-2.3587780000000005
-31,0,0.136,-3.2484640000000002
-32,1,0.978,1.4044279999999985
-33,1,0.957,1.2883819999999986
-34,0,0.52,-1.1264800000000004
-35,0,0.071,-3.607654
-36,0,0.377,-1.9166980000000002
-37,1,0.699,-0.13732600000000117
-38,0,0.396,-1.8117040000000002
-39,0,0.127,-3.298198
-40,0,0.694,-0.164956000000001
-41,0,0.887,0.9015619999999993
-42,1,0.652,-0.39704800000000073
-43,0,0.046,-3.745804
-44,0,0.304,-2.3200960000000004
-45,0,0.043,-3.762382
-46,0,0.696,-0.15390400000000115
-47,1,0.59,-0.7396600000000007
-48,0,0.757,0.1831819999999995
-49,1,0.631,-0.5130940000000006
-50,0,0.058,-3.679492
-51,0,0.499,-1.2425260000000007
-52,0,0.571,-0.8446540000000007
-53,0,0.246,-2.6406040000000006
-54,0,0.636,-0.4854640000000008
-55,0,0.719,-0.026806000000000996
-56,0,0.509,-1.1872660000000006
-57,1,0.856,0.7302559999999989
-58,1,0.653,-0.3915220000000006
-59,0,0.811,0.4815859999999992
-60,0,0.576,-0.8170240000000009
-61,1,0.912,1.0397119999999989
-62,0,0.063,-3.651862
-63,0,0.108,-3.403192
-64,1,0.919,1.0783939999999994
-65,0,0.204,-2.8726960000000004
-66,0,0.609,-0.6346660000000006
-67,0,0.069,-3.618706
-68,1,0.818,0.5202679999999988
-69,0,0.712,-0.0654880000000011
-70,0,0.085,-3.53029
-71,0,0.248,-2.6295520000000003
-72,1,0.765,0.22738999999999887
-73,0,0.285,-2.4250900000000004
-74,1,0.982,1.426531999999999
-75,0,0.012,-3.933688
-76,0,0.273,-2.491402
-77,0,0.445,-1.5409300000000004
-78,1,0.966,1.3381159999999985
-79,0,0.067,-3.629758
-80,1,0.935,1.166809999999999
-81,0,0.633,-0.5020420000000008
-82,0,0.531,-1.0656940000000006
-83,1,0.551,-0.9551740000000004
-84,0,0.477,-1.3640980000000007
-85,0,0.602,-0.6733480000000007
-86,0,0.428,-1.6348720000000005
-87,0,0.475,-1.3751500000000005
-88,0,0.201,-2.8892740000000003
-89,0,0.531,-1.0656940000000006
-90,1,0.757,0.1831819999999995
-91,1,0.81,0.4760599999999995
-92,0,0.028,-3.845272
-93,1,0.728,0.022927999999999393
-94,0,0.01,-3.94474
-95,0,0.401,-1.7840740000000004
-96,0,0.488,-1.3033120000000005
-97,0,0.273,-2.491402
-98,0,0.124,-3.314776
-99,0,0.628,-0.5296720000000006
+y,x1
+1,0.587
+0,0.607
+1,0.921
+0,0.292
+1,0.911
+0,0.222
+1,0.936
+0,0.462
+0,0.368
+0,0.213
+0,0.854
+0,0.421
+0,0.701
+0,0.456
+0,0.842
+0,0.282
+0,0.749
+0,0.151
+0,0.3
+0,0.878
+0,0.454
+1,0.678
+0,0.097
+0,0.032
+0,0.206
+0,0.335
+0,0.305
+1,0.98
+0,0.026
+0,0.589
+0,0.297
+0,0.136
+1,0.978
+1,0.957
+0,0.52
+0,0.071
+0,0.377
+1,0.699
+0,0.396
+0,0.127
+0,0.694
+0,0.887
+1,0.652
+0,0.046
+0,0.304
+0,0.043
+0,0.696
+1,0.59
+0,0.757
+1,0.631
+0,0.058
+0,0.499
+0,0.571
+0,0.246
+0,0.636
+0,0.719
+0,0.509
+1,0.856
+1,0.653
+0,0.811
+0,0.576
+1,0.912
+0,0.063
+0,0.108
+1,0.919
+0,0.204
+0,0.609
+0,0.069
+1,0.818
+0,0.712
+0,0.085
+0,0.248
+1,0.765
+0,0.285
+1,0.982
+0,0.012
+0,0.273
+0,0.445
+1,0.966
+0,0.067
+1,0.935
+0,0.633
+0,0.531
+1,0.551
+0,0.477
+0,0.602
+0,0.428
+0,0.475
+0,0.201
+0,0.531
+1,0.757
+1,0.81
+0,0.028
+1,0.728
+0,0.01
+0,0.401
+0,0.488
+0,0.273
+0,0.124
+0,0.628