Remove specific python interpreter for the cluster: MUST USE VIRTUAL ENVS INSTEAD !

Makefile

-CMD_PYTHON=python2
+CMD_PYTHON=python
 PYTHON=$(CMD_PYTHON) -m cadbiom
 #LOGLEVEL=--loglevel=debug
 #LOGLEVEL=--loglevel=info
@@ -10,7 +10,7 @@ all: build
 
 .PHONY: build
 build:
-	pip2 install -r requirements.txt
+	pip install -r requirements.txt
 
 .PHONY: run_gui
 run_gui: