hw/isa/pc87312: Remove unused function is_parallel_epp()

The function is_parallel_epp() is unused; remove it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

hw/isa/pc87312.c

diff --git a/hw/isa/pc87312.c b/hw/isa/pc87312.c
index b352b49..9327c53 100644
--- a/hw/isa/pc87312.c
+++ b/hw/isa/pc87312.c
@@ -86,11 +86,6 @@
     }
 }
 
-static inline bool is_parallel_epp(PC87312State *s)
-{
-    return s->regs[REG_PTR] & PTR_EPP_MODE;
-}
-
 
 /* UARTs */