#2703 remove warning if temperature not provided

[valentinsulzer]

Description

Fixes #2703

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ pre-commit run
• All tests pass: $ python run-tests.py --unit
• The documentation builds: $ cd docs and then $ make clean; make html

You can run all three at once, using $ python run-tests.py --quick.

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

Base: 99.69% // Head: 99.69% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (889f929) compared to base (f7e7a6f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2704      +/-   ##
===========================================
- Coverage    99.69%   99.69%   -0.01%     
===========================================
  Files          271      271              
  Lines        19620    19616       -4     
===========================================
- Hits         19560    19556       -4     
  Misses          60       60              

Impacted Files	Coverage Δ
pybamm/meshes/one_dimensional_submeshes.py	100.00% <ø> (ø)
pybamm/experiments/experiment.py	100.00% <100.00%> (ø)
pybamm/solvers/idaklu_solver.py	99.07% <100.00%> (+<0.01%)	⬆️

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[rtimms]

thanks, this is annoying haha