Remove files_in_usr_local from casks that only have it due to `binary` (#3243)

* Casks/smartgit-rc.rb: removed files_in_usr_local

* Casks/sourcetree-alpha.rb: removed files_in_usr_local

* Casks/sourcetree-beta.rb: removed files_in_usr_local

* Casks/sublime-text2.rb: removed files_in_usr_local

* Casks/sublime-text-dev.rb: removed files_in_usr_local

* Casks/tower-beta.rb: removed files_in_usr_local

* Update checkpoint

Casks/smartgit-rc.rb

@@ -8,8 +8,4 @@ cask 'smartgit-rc' do
 
   app 'SmartGit.app'
   binary "#{appdir}/SmartGit.app/Contents/MacOS/SmartGit"
-
-  caveats do
-    files_in_usr_local
-  end
 end

Casks/sourcetree-alpha.rb

@@ -29,8 +29,4 @@ cask 'sourcetree-alpha' do
                 '~/Library/Preferences/com.torusknot.SourceTreeNotMAS.LSSharedFileList.plist',
                 '~/Library/Saved Application State/com.torusknot.SourceTreeNotMAS.savedState',
               ]
-
-  caveats do
-    files_in_usr_local
-  end
 end

Casks/sourcetree-beta.rb

@@ -29,8 +29,4 @@ cask 'sourcetree-beta' do
                 '~/Library/Preferences/com.torusknot.SourceTreeNotMAS.LSSharedFileList.plist',
                 '~/Library/Saved Application State/com.torusknot.SourceTreeNotMAS.savedState',
               ]
-
-  caveats do
-    files_in_usr_local
-  end
 end

Casks/sublime-text-dev.rb

@@ -21,8 +21,4 @@ cask 'sublime-text-dev' do
                 '~/Library/Preferences/com.sublimetext.3.plist',
                 '~/Library/Saved Application State/com.sublimetext.3.savedState',
               ]
-
-  caveats do
-    files_in_usr_local
-  end
 end

Casks/sublime-text2.rb

@@ -17,8 +17,4 @@ cask 'sublime-text2' do
                 '~/Library/Caches/com.sublimetext.2',
                 '~/Library/Saved Application State/com.sublimetext.2.savedState',
               ]
-
-  caveats do
-    files_in_usr_local
-  end
 end

Casks/tower-beta.rb

@@ -17,8 +17,4 @@ cask 'tower-beta' do
                 '~/Library/Caches/com.fournova.Tower2',
                 '~/Library/Preferences/com.fournova.Tower2.plist',
               ]
-
-  caveats do
-    files_in_usr_local
-  end
 end