Remove unnecessary #include "phiclass.h".

[r26330]

ir/be/becopyopt.c

@@ -42,7 +42,6 @@
 #include "irprog.h"
 #include "irloop_t.h"
 #include "iredges_t.h"
-#include "phiclass.h"
 #include "irbitset.h"
 #include "irphase_t.h"
 #include "irprintf_t.h"

ir/be/bemain.c

@@ -39,7 +39,6 @@
 #include "irgopt.h"
 #include "irgraph.h"
 #include "irdump.h"
-#include "phiclass.h"
 #include "irdom_t.h"
 #include "iredges_t.h"
 #include "irloop_t.h"

ir/be/bepressurestat.c

@@ -41,7 +41,6 @@
 #include "irnode_t.h"
 #include "ircons_t.h"
 #include "irloop_t.h"
-#include "phiclass.h"
 #include "iredges.h"
 #include "execfreq.h"
 #include "irtools.h"