Update installation document about OS X again.

ChangeLog

+2016-05-28  Kubo Takehiro  <kubo@jiubao.org>
+	* docs/install-on-osx.md: Update installation document about OS X again.
+
 2016-05-28  Kubo Takehiro  <kubo@jiubao.org>
 	* docs/install-on-osx.md: Update installation document about OS X.
 

docs/install-on-osx.md

@@ -50,10 +50,6 @@ To install `Oracle Instant Client Basic` via [Homebrew][]
 
 * Run the followining commands:
 
-  **Note:** Use `kubo/instantclient' instead of 'InstantClientTap/instantclient'
-  until [this pull request](https://github.com/InstantClientTap/homebrew-instantclient/pull/7)
-  is accepted.
-
         brew tap InstantClientTap/instantclient
         brew install instantclient-basic
         brew install instantclient-sdk
@@ -72,10 +68,6 @@ To install `Oracle Instant Client Basic Lite` via [Homebrew][]
 
 * Run the followining commands:
 
-  **Note:** Use `kubo/instantclient' instead of 'InstantClientTap/instantclient'
-  until [this pull request](https://github.com/InstantClientTap/homebrew-instantclient/pull/7)
-  is accepted.
-
         brew tap InstantClientTap/instantclient
         brew install instantclient-basiclite
         brew install instantclient-sdk