CONTRACTS: remove leftover debug print

[remi-delmas-3000]

Remove a leftover debug print which was flooding the terminal output.

• Each commit message has a non-empty body, explaining why the change was made.
• [] Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• The feature or user visible behaviour I have added or modified has been documented in the User Guide in doc/cprover-manual/
• Regression or unit tests are included, or existing tests cover the modified code (in this case I have detailed which ones those are in the commit message).
• My commit message includes data points confirming performance improvements (if claimed).
• My PR is restricted to a single feature or bugfix.
• White-space or formatting changes outside the feature-related changed lines are in commits of their own.

[codecov]

Codecov Report

Base: 78.38% // Head: 78.40% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (1aa665a) compared to base (3a1a5ac).
Patch coverage: 95.55% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7435      +/-   ##
===========================================
+ Coverage    78.38%   78.40%   +0.02%     
===========================================
  Files         1655     1659       +4     
  Lines       190304   190381      +77     
===========================================
+ Hits        149166   149274     +108     
+ Misses       41138    41107      -31     

Impacted Files	Coverage Δ
...cts/dynamic-frames/dfcc_lift_memory_predicates.cpp	89.50% <ø> (-0.11%)	⬇️
src/ansi-c/c_typecheck_base.cpp	83.10% <85.71%> (ø)
src/goto-instrument/contracts/contracts.cpp	95.38% <100.00%> (ø)
src/goto-programs/builtin_functions.cpp	60.68% <100.00%> (ø)
...c/solvers/smt2_incremental/convert_expr_to_smt.cpp	89.50% <100.00%> (+6.01%)	⬆️
src/util/lower_byte_operators.cpp	92.76% <100.00%> (ø)
...t/solvers/smt2_incremental/convert_expr_to_smt.cpp	99.60% <100.00%> (ø)
.../goto-instrument/goto_instrument_parse_options.cpp	71.31% <0.00%> (-0.17%)	⬇️
... and 28 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.