C++ tests: fix output of bug-stricken test

The expected output was incorrect and the result of an evaluator bug.
This change should go together with the internal PR that fixes this bug.

Author: hmakholm

cpp/ql/test/query-tests/Security/CWE/CWE-120/semmle/tests/BadlyBoundedWrite.expected

@@ -1,6 +1,4 @@
-| tests2.cpp:59:3:59:10 | call to snprintf | This 'call to snprintf' operation is limited to 13 bytes but the destination is only 0 bytes. |
 | tests2.cpp:59:3:59:10 | call to snprintf | This 'call to snprintf' operation is limited to 13 bytes but the destination is only 2 bytes. |
-| tests2.cpp:63:3:63:10 | call to snprintf | This 'call to snprintf' operation is limited to 13 bytes but the destination is only 0 bytes. |
 | tests2.cpp:63:3:63:10 | call to snprintf | This 'call to snprintf' operation is limited to 13 bytes but the destination is only 3 bytes. |
 | tests.c:43:3:43:10 | call to snprintf | This 'call to snprintf' operation is limited to 111 bytes but the destination is only 110 bytes. |
 | tests.c:46:3:46:10 | call to snprintf | This 'call to snprintf' operation is limited to 111 bytes but the destination is only 110 bytes. |