Fix flake8 whitespace reports

$ flake8 | grep -E '(E203|E221|E226|E303|W291|W293)'
./mesonbuild/build.py:964:5: E303 too many blank lines (2)
./tools/dircondenser.py:70:36: E221 multiple spaces before operator

mesonbuild/build.py

@@ -960,7 +960,6 @@ You probably should put it in link_with instead.''')
                 raise InvalidArguments('Tried to mix cross built and native libraries in target {!r}'.format(self.name))
             self.link_targets.append(t)
 
-
     def link_whole(self, target):
         for t in listify(target, unholder=True):
             if not isinstance(t, StaticLibrary):

tools/dircondenser.py

@@ -67,7 +67,7 @@ def condense(dirname):
         i = _i + 1
         if e[0] != i:
             old_name = str(e[0]) + ' ' + e[1]
-            new_name = str(i) + ' '  + e[1]
+            new_name = str(i) + ' ' + e[1]
             #print('git mv "%s" "%s"' % (old_name, new_name))
             subprocess.check_call(['git', 'mv', old_name, new_name])
             replacements.append((old_name, new_name))