Removal of delta-homes home page search in firefox

Unwanted Delta-homes search has come up in firefox.

1. Tried removing unwanted programs from control panel
2. Reset the strings that had delta-homes string in  about:config settings of firefox
3. Removed the unwanted extensions Tools->Addons->extensions

The thing that finally worked is in windows shortcut from desktop/start menu go to properties(by right clicking the shortcut).

While invoking the firefox.exe it appends the website name string into the exe file name which opens up that page.Removal of the unwanted strings helped.