Remove gogs user if it already exists

src/freedombone

@@ -6417,6 +6417,13 @@ function install_gogs {
 		rm -rf $GOPATH/src/github.com/gogits
 	fi
 
+	if [ -d /home/gogs ]; then
+		userdel -r gogs
+	fi
+	if [ -d /home/gogs ]; then
+		rm -rf /home/gogs
+	fi
+
 	# add a gogs user account
 	adduser --disabled-login --gecos 'Gogs' git