Remove redundant pandas import

Change-Id: I352b617d2a2587b2bbeab08a270a14539561b2cc
diff --git a/KorAPClient/__init__.py b/KorAPClient/__init__.py
index 0e5a9e6..9add34b 100644
--- a/KorAPClient/__init__.py
+++ b/KorAPClient/__init__.py
@@ -3,7 +3,6 @@
 import rpy2.robjects.packages as packages
 import rpy2.robjects.pandas2ri as pandas2ri
 from rpy2.robjects.methods import RS4
-from pandas import DataFrame
 
 KorAPClient = packages.importr('RKorAPClient')
 pandas2ri.activate()