Revert "Merge pull request #1377 from morpheusthewhite/sum_snippet"
Revert "Merge pull request #1377 from morpheusthewhite/sum_snippet"

This reverts commit 474189a2dbdc77d13a0e5038a6672391368ca3b4, reversing
changes made to 3db02e51e3c2ed63be7e919e6d03d15c2195f605.

See discussion in #1377.

James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop,James-Yu/LaTeX-Workshop