Remove Results classes from Node gitignore

These aren't really common patterns in the Node world, and if a Node project includes one of these types as files, they're as likely to want to include them in the project as not (`*.csv` is as likely to be a data source as `*.json`).

Author: stuartpb

Node.gitignore

@@ -7,13 +7,6 @@ pids
 *.pid
 *.seed
 
-# Run / build output
-results
-*.csv
-*.dat
-*.out
-*.gz
-
 # Directory for instrumented libs generated by jscoverage/JSCover
 lib-cov