separate binary classification and regression demo

demo/regression/reg.conf

@@ -1,22 +0,0 @@
-num_round=10
-
-save_period=0
-
-data = "train.txt"
-test:data = "test.txt"
-eval[valid] = "validation.txt"
-
-booster_type=1
-
-bst:num_feature=3
-
-bst:learning_rate=0.01
-                
-bst:min_child_weight=1
-                
-bst:min_split_loss=0.1
-                
-bst:max_depth=3           
-                
-bst:reg_lambda=0.1
-

demo/regression/validation.txt

@@ -1,4 +0,0 @@
-1 0:1 1:2 2:1
-1 0:2 1:1 2:1
-0 0:5 1:0 2:0
-