Update .gitignore

apps/mobile/.gitignore

@@ -1,9 +1,7 @@
 # OSX
-#
 .DS_Store
 
 # Xcode
-#
 build/
 *.pbxuser
 !default.pbxuser
@@ -23,7 +21,6 @@ DerivedData
 ios/.xcode.env.local
 
 # Android/IntelliJ
-#
 build/
 .idea
 .gradle
@@ -32,7 +29,6 @@ local.properties
 *.hprof
 
 # node.js
-#
 node_modules/
 npm-debug.log
 yarn-error.log
@@ -44,7 +40,6 @@ buck-out/
 !debug.keystore
 
 # fastlane
-#
 # It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
 # screenshots whenever they are needed.
 # For more information about the recommended setup visit:
@@ -90,15 +85,10 @@ web-build/
 
 dist/
 
-# @generated expo-cli sync-647791c5bd841d5c91864afb91c302553d300921
-# The following patterns were generated by expo-cli
-
 # OSX
-#
 .DS_Store
 
 # Xcode
-#
 build/
 *.pbxuser
 !default.pbxuser
@@ -118,7 +108,6 @@ DerivedData
 project.xcworkspace
 
 # Android/IntelliJ
-#
 build/
 .idea
 .gradle
@@ -130,7 +119,6 @@ local.properties
 !debug.keystore
 
 # node.js
-#
 node_modules/
 npm-debug.log
 yarn-error.log
@@ -148,5 +136,3 @@ yarn-error.log
 .expo/
 web-build/
 dist/
-# /app.json
-# @end expo-cli