Delve takes quite a while to load even when not loading Go files at all

[tucnak]

As you can see from this profiler excerpt, delve takes a solid half a second to load even when loading plaintext files.

058.538  009.532  009.532: sourcing /Users/badt/.vim/plugged/vim-unimpaired/plugin/unimpaired.vim
059.444  000.655  000.655: sourcing /Users/badt/.vim/plugged/vim-surround/plugin/surround.vim
060.564  000.891  000.891: sourcing /Users/badt/.vim/plugged/vim-abolish/plugin/abolish.vim
061.084  000.332  000.332: sourcing /Users/badt/.vim/plugged/targets.vim/plugin/targets.vim
062.140  000.638  000.638: sourcing /Users/badt/.vim/plugged/vim-go/autoload/go/config.vim
063.522  000.537  000.537: sourcing /Users/badt/.vim/plugged/vim-go/autoload/go/util.vim
063.564  002.302  001.127: sourcing /Users/badt/.vim/plugged/vim-go/plugin/go.vim
067.768  003.999  003.999: sourcing /Users/badt/.vim/plugged/emmet-vim/plugin/emmet.vim
068.100  000.030  000.030: sourcing /Users/badt/.vim/plugged/goyo.vim/plugin/goyo.vim
521.377  453.067  453.067: sourcing /Users/badt/.vim/plugged/vim-delve/plugin/delve.vim

This is simply unacceptable for most Vim users on legacy hardware. And I'm running a top of the line 2015 MBP which is not particularly old as it happens.