Patch (Java): Purge java_expand_expr()

[Andrew Haley]

Ranjit Mathew writes:
 > 
 > Index: ChangeLog
 > from  Ranjit Mathew  <rmathew@hotmail.com>
 > 	Andrew Haley  <aph@redhat.com>
 > 
 > 	Purge java_expand_expr.
 > 	* java-tree.h: Remove declaration for java_expand_expr.
 > 	* lang.c: Remove override for LANG_HOOKS_EXPAND_EXPR.
 > 	* expr.c (java_expand_expr): Remove.
 > 	(case_identity): Likewise.
 > 	(get_primitive_array_vtable): Likewise.
 > 	(emit_init_test_initialization): Likewise.

We should fix emit_init_test_initialization for tree-SSA, otherwise
this is a performance regression.

Andrew.