'completionTextEdit' option causes clangd to insert "#include" statement twice

[girishji]

Text changes are applied twice, once when completion item is accepted and second time when CompleteDone event is fired (calls LspCompleteDone()). This is the case for clangd server.

To reproduce, simply open a foo.c file and try to complete print, as follow:

int main() {
    prin  -> select 'printf', then <c-y>
}

you get this:

[girishji]

girishji/vimcomplete#72