Feature extend julianday

Adds a couple of juliandelta and julianday operations

src/mtime_c_bindings.f90

@@ -128,13 +128,6 @@ module mtime_c_bindings
       import :: c_ptr
       type(c_ptr), value :: jd
     end subroutine my_deallocatejuliandelta
-    !
-    function my_addjuliandeltatojulianday(my_julianday, my_juliandelta, ret_julianday) result(julianday_ptr) &
-         &   bind(c, name='addJulianDelta')
-      import :: c_ptr
-      type(c_ptr) :: julianday_ptr
-      type(c_ptr), value :: my_julianday, my_juliandelta, ret_julianday
-    end function my_addjuliandeltatojulianday
   end interface
 
   interface