Fixes #5656: removed old simple modal source file
Merge pull request #641 from fanf/bug_5656/removed_unused_simpliemodeal_js_from_5492

Fixes #5656: removed old simple modal source file
Merge branch 'branches/rudder/2.6' into branches/rudder/2.10
Merge branch 'branches/rudder/2.10' into branches/rudder/2.11