remove unused imports, increment version.

setup.py

 from setuptools import setup
 
 setup(name='solventmapcreator',
-      version='2.3.0',
+      version='2.3.1',
       description='python scripts for generating solvent maps and analysing solvation curves.',
       url='https://bitbucket.org/mdd31/solventmapcreator',
       author='Mark Driver',

solventmapcreator/solvationcalculation/gammacalculator.py

@@ -10,11 +10,9 @@ From
 
 import logging
 import numpy as np
-import resultsanalysis.resultsoutput.plottinginput as plottinginput
 import phasexmlparser.parsers.associationenergyparser as assocparser
 import solventmapcreator.solvationcalculation.fractionaloccupancycalculator as fractionaloccupancycalculator
 import solventmapcreator.solvationcalculation.solvationcalculator as solvcalculator
-import solventmapcreator.solvationcalculation.solvationplotinformation as solvationplotinformation
 import solventmapcreator.solvationcalculation.solvationmapgenerator as solvmapgenerator
 
 logging.basicConfig()