deal with remaining occurences of solve

kwant/__init__.py

@@ -18,9 +18,9 @@ __all__.append('Builder')
 from .lattice import TranslationalSymmetry
 __all__.append('TranslationalSymmetry')
 
-# Make kwant.solvers.default.solve available as kwant.solve.
+# Make kwant.solvers.default.smatrix available as kwant.smatrix.
 smatrix = solvers.default.smatrix
-__all__.append('solve')
+__all__.append('smatrix')
 
 # Importing plotter might not work, but this does not have to be a problem --
 # only no plotting will be available.