codecov: remove flags definition

[zchee]

codecov: remove flags definition.

[codecov]

Codecov Report

Merging #122 (b4b68fa) into master (9892133) will increase coverage by 67.2%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #122      +/-   ##
=========================================
+ Coverage        0   67.2%   +67.2%     
=========================================
  Files           0      14      +14     
  Lines           0    3035    +3035     
=========================================
+ Hits            0    2042    +2042     
- Misses          0     993     +993     

Flag	Coverage Δ
linux-1.15-nightly	67.2% <ø> (?)
linux-1.15-stable	67.1% <ø> (?)
linux-1.16-nightly	67.1% <ø> (?)
linux-1.16-stable	67.2% <ø> (?)
linux-1.17-nightly	67.2% <ø> (?)
linux-1.17-stable	67.1% <ø> (?)
macos-1.15-nightly	67.2% <ø> (?)
macos-1.15-stable	67.2% <ø> (?)
macos-1.16-nightly	67.2% <ø> (?)
macos-1.16-stable	67.2% <ø> (?)
macos-1.17-nightly	67.2% <ø> (?)
macos-1.17-stable	67.2% <ø> (?)
windows-1.15-nightly	66.4% <ø> (?)
windows-1.15-stable	66.4% <ø> (?)
windows-1.16-nightly	66.4% <ø> (?)
windows-1.16-stable	66.3% <ø> (?)
windows-1.17-nightly	66.3% <ø> (?)
windows-1.17-stable	66.4% <ø> (?)

Impacted Files	Coverage Δ
nvim/nvim.go	75.7% <0.0%> (ø)
msgpack/pack.go	87.9% <0.0%> (ø)
msgpack/unpack.go	94.3% <0.0%> (ø)
msgpack/rpc/rpc.go	68.2% <0.0%> (ø)
nvim/types.go	87.5% <0.0%> (ø)
msgpack/field.go	78.3% <0.0%> (ø)
msgpack/encode.go	83.0% <0.0%> (ø)
nvim/plugin/main.go	30.0% <0.0%> (ø)
msgpack/decode.go	82.0% <0.0%> (ø)
msgpack/msgpack.go	85.7% <0.0%> (ø)
... and 4 more

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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