deleted unused variable
pulled from semtag dev
Merge branch 'dev' of https://github.com/shilad/sem-tag into dev
Merge branch 'dev' of https://github.com/shilad/sem-tag into dev
Merge branch 'dev' of https://github.com/shilad/sem-tag into dev
...
Merge branch 'dev' of https://github.com/shilad/sem-tag into dev
Merge branch 'dev' of https://github.com/shilad/sem-tag into dev

Conflicts:
	semtag-core/src/main/java/org/semtag/core/model/Item.java
Merge branch 'dev' of https://github.com/shilad/sem-tag into dev

Conflicts:
	semtag-core/src/main/java/org/semtag/core/model/Item.java
Merge remote-tracking branch 'origin/dev' into dev