Revert "Start recording the formula path in the install receipt"

This reverts commit f98d1d660c38afe3caf1450b2443a6d5fab8a14b.

Library/Homebrew/tab.rb

@@ -11,23 +11,16 @@ class Tab < OpenStruct
   FILENAME = 'INSTALL_RECEIPT.json'
 
   def self.create(formula, compiler, stdlib, build)
-    attributes = {
-      :used_options => build.used_options.as_flags,
-      :unused_options => build.unused_options.as_flags,
-      :tabfile => formula.prefix.join(FILENAME),
-      :built_as_bottle => !!ARGV.build_bottle?,
-      :poured_from_bottle => false,
-      :tapped_from => formula.tap,
-      :time => Time.now.to_i,
-      :HEAD => Homebrew.git_head,
-      :compiler => compiler,
-      :stdlib => stdlib,
-      :source => {
-        :path => formula.path,
-      },
-    }
-
-    new(attributes)
+    Tab.new :used_options => build.used_options.as_flags,
+            :unused_options => build.unused_options.as_flags,
+            :tabfile => formula.prefix.join(FILENAME),
+            :built_as_bottle => !!ARGV.build_bottle?,
+            :poured_from_bottle => false,
+            :tapped_from => formula.tap,
+            :time => Time.now.to_i,
+            :HEAD => Homebrew.git_head,
+            :compiler => compiler,
+            :stdlib => stdlib
   end
 
   def self.from_file path
@@ -155,11 +148,7 @@ class Tab < OpenStruct
       :time => time,
       :HEAD => self.HEAD,
       :stdlib => (stdlib.to_s if stdlib),
-      :compiler => (compiler.to_s if compiler),
-      :source => {
-        :path => source[:path].to_s,
-      },
-    })
+      :compiler => (compiler.to_s if compiler)})
   end
 
   def write