diff --git a/session.vim b/session.vim
index a1918c47e4..72524681e5 100644
--- a/session.vim
+++ b/session.vim
@@ -12,9 +12,7 @@ let g:syntastic_cpp_include_dirs = [
             \'/usr/include/fontconfig',
             \]
 let g:syntastic_c_include_dirs = g:syntastic_cpp_include_dirs
-let g:syntastic_python_flake8_exec = 'flake8-python2'
 let g:syntastic_python_flake8_args = '--filename='. shellescape('*.py,*.recipe')
-let g:python_version_2 = 1
 
 set wildignore+=resources/mathjax/*
 set wildignore+=resources/rapydscript/lib/*
@@ -40,6 +38,3 @@ fun! CalibreLog()
 endfun
 
 nnoremap \log :call CalibreLog()<CR>
-
-python import init_calibre
-python import calibre