Fix more warnings

Description

Fix more warnings. Mainly about unused functions.

News snippet

Fix more warnings.

Checklist

• I have checked that my code follows the Octopus coding standards
• I have added tests for all the new features added in this request.

changed milestone to %11.0

added 1 deleted label

Codecov Report

Merging #1117 (84cb4309) into develop (03d12afa) will increase coverage by 0.20%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #1117      +/-   ##
===========================================
+ Coverage    70.55%   70.75%   +0.20%     
===========================================
  Files          515      515              
  Lines       103081   102774     -307     
===========================================
- Hits         72727    72721       -6     
+ Misses       30354    30053     -301     

Impacted Files	Coverage Δ
src/basic/accel.F90	81.81% <ø> (-0.05%)
src/basic/mpi_lib.F90	100.00% <ø> (ø)
src/grid/mesh_partition.F90	81.38% <ø> (ø)
src/hamiltonian/pcm.F90	70.98% <ø> (-0.02%)
src/maxwell/external_densities.F90	76.47% <ø> (ø)
src/maxwell/maxwell_boundary_op.F90	71.78% <ø> (ø)
src/maxwell/medium_mxll.F90	86.98% <ø> (-0.05%)
src/maxwell/propagator_mxll.F90	61.91% <ø> (+18.29%)
src/states/states_elec_block_inc.F90	93.45% <ø> (-1.33%)
src/td/td_write.F90	55.34% <ø> (-1.36%)
... and 7 more

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assigned to @nicolastd

approved this merge request

merged

mentioned in commit 0a0c868a