treewide: use blas and lapack

This makes packages use lapack and blas, which can wrap different
BLAS/LAPACK implementations.

treewide: cleanup from blas/lapack changes

A few issues in the original treewide:

- can’t assume blas64 is a bool
- unused commented code

pkgs/development/libraries/libcint/default.nix

@@ -2,7 +2,7 @@
 , lib
 , fetchFromGitHub
 , cmake
-, openblas
+, blas
   # Check Inputs
 , python2
 }:
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ openblas ];
+  buildInputs = [ blas ];
   cmakeFlags = [
     "-DENABLE_TEST=1"
     "-DQUICK_TEST=1"