Remove unnecessary rules

ROS.gitignore

-~
-.swp
 build/
 bin/
 lib/
 msg_gen/
 srv_gen/
-msg/.*Action\.msg
-msg/.*ActionFeedback\.msg
-msg/.*ActionGoal\.msg
-msg/.*ActionResult\.msg
-msg/.*Feedback\.msg
-msg/.*Goal\.msg
-msg/.*Result\.msg
-msg/_.*\.py
-
-\.pcd
-.pyc
+msg/*Action.msg
+msg/*ActionFeedback.msg
+msg/*ActionGoal.msg
+msg/*ActionResult.msg
+msg/*Feedback.msg
+msg/*Goal.msg
+msg/*Result.msg
+msg/_*.py
 
 # Generated by dynamic reconfigure
-\.cfgc
+*.cfgc
 /cfg/cpp/
-/cfg/.*\.py
+/cfg/*.py
 
 # Ignore generated docs
-.dox
-.wikidoc
+*.dox
+*.wikidoc
 
 # eclipse stuff
 .project
 # qcreator stuff
 CMakeLists.txt.user
 
-srv/_.*\.py
-\.pcd
-.pyc
+srv/_*.py
+*.pcd
+*.pyc
 qtcreator-*
 *.user