There is no need to unignore `.gitignore`.

Because files and directories starting with a `.` are not ignored in general.

Global/Linux.gitignore

@@ -1,2 +1 @@
-!.gitignore
 *~

PlayFramework.gitignore

@@ -1,6 +1,3 @@
-# Ignore all dotfiles...
-.*
-
 # Ignore Play! working directory #
 db
 eclipse