Minor corrections

Author: rajithv

ext/symengine/ruby_function.c

@@ -52,3 +52,5 @@ IMPLEMENT_ONE_ARG_FUNC(dirichlet_eta);
 IMPLEMENT_ONE_ARG_FUNC(zeta);
 IMPLEMENT_ONE_ARG_FUNC(gamma);
 
+#undef IMPLEMENT_ONE_ARG_FUNC
+

spec/functions_spec.rb

@@ -8,10 +8,6 @@
     before :each do
       @pi = SymEngine::PI
       @e = SymEngine::E
-      @one = SymEngine::Integer.new(1)
-      @zero = SymEngine::Integer.new(0)
-      @two = SymEngine::Integer.new(2)
-      @minone = SymEngine::Integer.new(-1)
       @x = SymEngine::Symbol.new("x");
     end