Fix dependency for graphql-language-service-cli

installer/install-graphql-language-server.cmd

@@ -6,7 +6,6 @@ if not exist package.json (
 	echo {"name":""}>package.json
 )
 
-call npm install "graphql"
 call npm install "graphql-language-service-cli"
 
 echo @echo off ^

installer/install-graphql-language-server.sh

@@ -9,6 +9,5 @@ if [ ! -f package.json ]; then
   echo '{"name": ""}' >package.json
 fi
 
-npm install "graphql"
 npm install "graphql-language-service-cli"
 ln -s "./node_modules/.bin/graphql-lsp" graphql-language-server