Remove un-necessary locking (#1)

[jhlange]

Remove un-necessary locking in the logging API.

[codecov-io]

Codecov Report

Merging #29 into master will not change coverage.
The diff coverage is 73.33%.

@@           Coverage Diff           @@
##           master      #29   +/-   ##
=======================================
  Coverage   58.88%   58.88%           
=======================================
  Files           6        6           
  Lines         518      518           
=======================================
  Hits          305      305           
  Misses        210      210           
  Partials        3        3

Impacted Files	Coverage Δ
log/log.go	50% <73.33%> (ø)	⬆️

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[vishr]

@jhlange Do we event need a lock for the entire block? I just looked at the code and to me it is only necessary while dumping the buffer to writer. Let me know your thoughts?

Here is a fix: 44f2533