ChangeLog in review-1.7.2 vs ChangeLog in review-2.0.0.beta1

@@ -1,20 +1,4 @@
-Sun Dec 27 16:25:45 2015  Masayoshi Takahashi  <[e-mail]>
-
-	* Release 1.7.2
-
-Sun Nov 29 23:12:29 2015  Masayoshi Takahashi  <[e-mail]>
-
-	* Release 1.7.1
-
-Thu Oct 29 13:58:22 2015  KADO Masanori  <[e-mail]>
-
-	* Release 1.7.0
-
-Mon Jun 29 18:16:06 2015  KADO Masanori  <[e-mail]>
-
-	* Release 1.6.0
-
 Sat Feb 28 19:51:29 2015  KADO Masanori  <[e-mail]>
 
 	* Release 1.5.0.
 
 Sun Feb  1 20:17:22 2015  Kenshi Muto  <[e-mail]>