fix: remove missing parameter

Author: satra

nipype/interfaces/base.py

@@ -1164,7 +1164,7 @@ def read(self, drain=0):
             if not drain:
                 break
 
-    def _read(self, drain, encoding):
+    def _read(self, drain):
         "Read from the file descriptor"
         fd = self.fileno()
         buf = os.read(fd, 4096).decode(self.default_encoding)