Remove dead C code importing time.h

[maresb]

Description

The gcc 15 runtime was complaining about missing clock_gettime64 in #1401. I strongly suspect that removing the dead code related to profiling will solve the issue.

NOTE: This is untested

Related Issue

• (Possibly) closes BUG: Errors when upgrading to gcc version 15 #1401 when combined with Remove iostream include for C backend #1400
• Related to #

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

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📚 Documentation preview 📚: https://pytensor--1403.org.readthedocs.build/en/1403/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.08%. Comparing base (24a2234) to head (22d6b00).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1403   +/-   ##
=======================================
  Coverage   82.08%   82.08%           
=======================================
  Files         208      208           
  Lines       49565    49565           
  Branches     8792     8792           
=======================================
  Hits        40685    40685           
  Misses       6706     6706           
  Partials     2174     2174           

Files with missing lines	Coverage Δ
pytensor/tensor/blas.py	73.55% <100.00%> (ø)

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