Revert "XP: try to change the way we choose n_components to see if it fixes the test"

This reverts commit e86b61b.

Author: William de Vazelhes

metric_learn/_util.py

@@ -559,18 +559,13 @@ def _initialize_transformer(num_dims, input, y=None, init='auto',
     elif init in {'pca', 'lda'}:
       init_time = time.time()
       if init == 'pca':
-        # TODO: set back with n_components=num_dims
-        # pca = PCA(n_components=num_dims,
-        #           random_state=random_state)
-        pca = PCA(n_components=n_features,
+        pca = PCA(n_components=num_dims,
                   random_state=random_state)
         if verbose:
           print('Finding principal components... ')
           sys.stdout.flush()
         pca.fit(input)
-        # TODO: change here too
-        transformation = pca.components_[:num_dims]
-        # transformation = pca.components_
+        transformation = pca.components_
       elif init == 'lda':
         lda = LinearDiscriminantAnalysis(n_components=num_dims)
         if verbose: