Delete test for the AES algorithm parameter generator, which we no longer support.

The RI does not include an algorithm parameter generator for AES.

http://b/3061194

BouncyCastle dropped support for AES on February 18 2007:
http://www.bouncycastle.org/viewcvs/viewcvs.cgi/java/crypto/src/org/bouncycastle/jce/provider/BouncyCastleProvider.java.diff?r1=1.38&r2=1.39
http://www.bouncycastle.org/viewcvs/viewcvs.cgi/java/crypto/src/org/bouncycastle/jce/provider/JDKAlgorithmParameterGenerator.java.diff?r1=1.3&r2=1.4

Unfortunately, their checkin comment isn't intention-revealing:
  "fixed implictyCa to work with KeyFactory
   added SEED/Camllia support to CMS
   added further ISO9797 mac support
   further refactoring of JCE symmetric cipher code

Change-Id: I9aa045e1b5c8103cdf736efb1eb927c1acc747ae