Remove duplicate LspTypeDefinition (#531)

Author: thomasfaingnaert

plugin/lsp.vim

@@ -69,7 +69,6 @@ command! -range LspDocumentRangeFormat call lsp#ui#vim#document_range_format()
 command! -range LspDocumentRangeFormatSync call lsp#ui#vim#document_range_format_sync()
 command! LspImplementation call lsp#ui#vim#implementation(0)
 command! LspPeekImplementation call lsp#ui#vim#implementation(1)
-command! LspTypeDefinition call lsp#ui#vim#type_definition()
 command! -nargs=0 LspStatus echo lsp#get_server_status()
 command! LspNextReference call lsp#ui#vim#references#jump(+1)
 command! LspPreviousReference call lsp#ui#vim#references#jump(-1)