removed strata from externals.

svn.externals.uva_dev

 diablo_toolchain		http://svn.zephyr-software.com/repos/diablo_toolchain/trunk/
 idaproCur            		http://svn.zephyr-software.com/repos/idapro70/trunk/
 idaproCur_sdk        		http://svn.zephyr-software.com/repos/idapro70_sdk/trunk/
-strata               		http://svn.zephyr-software.com/repos/strata/trunk/
 peasoup_examples     		http://svn.zephyr-software.com/repos/peasoup_examples/trunk/
 security_transforms  		http://svn.zephyr-software.com/repos/security_transforms/trunk/
 irdb_transforms      		http://svn.zephyr-software.com/repos/irdb_transforms/trunk/
 SMPStaticAnalyzer    		http://svn.zephyr-software.com/repos/SMPStaticAnalyzer/trunk/
-stratafier           		http://svn.zephyr-software.com/repos/stratafier/trunk/
 zipr                 		http://svn.zephyr-software.com/repos/zipr/trunk/
 zipr_install         		http://svn.zephyr-software.com/repos/zipr_install/trunk/
 zipr_callbacks       		http://svn.zephyr-software.com/repos/zipr_callbacks/trunk/