[cppyy] Remove unused template instance pattern rule

as there are no instances to match.

Author: dpiparo

bindings/pyroot/cppyy/cppyy/test/templates.xml

@@ -36,7 +36,6 @@
   <class pattern="T_WithGreedyOverloads::*" />
 
   <namespace name="TypeReduction" />
-  <class pattern="TypeReduction::*" />
   <function pattern="TypeReduction::*" />
 
   <namespace name="FailedTypeDeducer" />