[instancer] Fix code move

Lib/fontTools/varLib/instancer/__init__.py

@@ -221,10 +221,6 @@ def changeTupleVariationsAxisLimits(variations, axisLimits):
     return variations
 
 
-def _negate(*values):
-    yield from (-1 * v for v in values)
-
-
 def changeTupleVariationAxisLimit(var, axisTag, axisLimit):
     assert isinstance(axisLimit, NormalizedAxisTent)
 

Lib/fontTools/varLib/instancer/solver.py

@@ -1,5 +1,8 @@
 from fontTools.varLib.models import supportScalar
 
+def _negate(*values):
+    yield from (-1 * v for v in values)
+
 def _solvePinned(tent, axisLimit):
 
     axisMin, axisDef, axisMax = axisLimit