remove excess empty line from CHANGES

Author: lcn2

CHANGES

@@ -8,7 +8,6 @@ The following are the changes from calc version 2.14.3.4 to 2.14.3.5:
     The libcalc shared library is now linked with libcustcalc.
 
 
-
 The following are the changes from calc version 2.14.3.0 to 2.14.3.4:
 
     Fix typo in the `make debug` Makefile rule.