Revert "added "./" in front of all non absolute output paths for AFNI"

This reverts commit a2d7aa3.

Author: chrisgorgo

nipype/interfaces/afni/base.py

@@ -146,10 +146,7 @@ def set_default_output_type(cls, outputtype):
 
     def _overload_extension(self, value):
         path, base, _ = split_filename(value)
-        new_path = os.path.join(path, base + Info.outputtype_to_ext(self.inputs.outputtype))
-        #some AFNI commands assume the relative path is relative to the input not the CWD
-        if not os.path.isabs(new_path):
-            return "./" + new_path
+        return os.path.join(path, base + Info.outputtype_to_ext(self.inputs.outputtype))
 
     def _list_outputs(self):
         outputs = super(AFNICommand, self)._list_outputs()