fixing indent error from merging bugs

Author: AnFreTh

mambular/models/sklearn_base_classifier.py

@@ -189,7 +189,6 @@ def build_model(
             X = pd.DataFrame(X)
         if isinstance(y, pd.Series):
             y = y.values
-        if X_val is not None:
         if X_val is not None:
             if not isinstance(X_val, pd.DataFrame):
                 X_val = pd.DataFrame(X_val)

mambular/models/sklearn_base_lss.py

@@ -209,7 +209,6 @@ def build_model(
             X = pd.DataFrame(X)
         if isinstance(y, pd.Series):
             y = y.values
-        if X_val is not None:
         if X_val is not None:
             if not isinstance(X_val, pd.DataFrame):
                 X_val = pd.DataFrame(X_val)

mambular/models/sklearn_base_regressor.py

@@ -190,7 +190,6 @@ def build_model(
             X = pd.DataFrame(X)
         if isinstance(y, pd.Series):
             y = y.values
-        if X_val is not None:
         if X_val is not None:
             if not isinstance(X_val, pd.DataFrame):
                 X_val = pd.DataFrame(X_val)