sched: remove trailing whitespaces

[dongahn]

Just noticed trailing whitespaces that were introduced from the latest changes.

If vim is used, adding the following to ~/.vimrc should highlight the trailing whitespaces for C code, which can help one not introduce them:

let c_space_errors = 1

[codecov-io]

Codecov Report

Merging #376 into master will not change coverage.
The diff coverage is 75%.

@@           Coverage Diff           @@
##           master     #376   +/-   ##
=======================================
  Coverage   75.88%   75.88%           
=======================================
  Files          59       59           
  Lines        9829     9829           
=======================================
  Hits         7459     7459           
  Misses       2370     2370

Impacted Files	Coverage Δ
sched/sched.c	73.49% <75%> (ø)	⬆️

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[coveralls]

Coverage remained the same at 77.545% when pulling 9cb5375 on dongahn:matching-service into d85cd12 on flux-framework:master.

[dongahn]

I think the codecov check is bogus as this PR only contains trailing whitespace removal.

[tpatki]

Looks good, and yes, noted the vimrc point. Merging.

[SteVwonder]

👍 We should add style checking for stuff like this as part of make check and the CI.