SMT2 backend: remove extra whitespace

[kroening]

This removes redundant whitespace in the output of the SMT2 backend.

• Each commit message has a non-empty body, explaining why the change was made.
• n/a Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• n/a 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).
• n/a My commit message includes data points confirming performance improvements (if claimed).
• My PR is restricted to a single feature or bugfix.
• n/a White-space or formatting changes outside the feature-related changed lines are in commits of their own.

[thomasspriggs]

Is this space actually needed or is it also redundant?

[kroening]

Yes, you'd get ")(" otherwise. Syntactically valid, but not pretty.

[thomasspriggs]

That makes sense. I wasn't aware if the goal was making this prettier or just shorter.

[codecov]

Codecov Report

Merging #7116 (6cd20d3) into develop (8b7b7a9) will increase coverage by 0.00%.
The diff coverage is 88.88%.

@@           Coverage Diff            @@
##           develop    #7116   +/-   ##
========================================
  Coverage    77.92%   77.92%           
========================================
  Files         1576     1576           
  Lines       181645   181648    +3     
========================================
+ Hits        141541   141544    +3     
  Misses       40104    40104           

Impacted Files	Coverage Δ
src/solvers/smt2/smt2_conv.cpp	68.69% <88.88%> (+0.03%)	⬆️

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