IB/mthca: Remove MSI support as scheduled

Remove MSI support from the mthca driver, as scheduled.  There is no
reason to use MSI instead of MSI-X, since MSI-X performs better.  No
one has spoken up since MSI support was deprecated in commit f6be6fbe
("IB/mthca: Schedule MSI support for removal"), so apparently the MSI
support is unused.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 15aa32e..7bbdd1f 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -60,13 +60,12 @@
 enum {
 	MTHCA_FLAG_DDR_HIDDEN = 1 << 1,
 	MTHCA_FLAG_SRQ        = 1 << 2,
-	MTHCA_FLAG_MSI        = 1 << 3,
-	MTHCA_FLAG_MSI_X      = 1 << 4,
-	MTHCA_FLAG_NO_LAM     = 1 << 5,
-	MTHCA_FLAG_FMR        = 1 << 6,
-	MTHCA_FLAG_MEMFREE    = 1 << 7,
-	MTHCA_FLAG_PCIE       = 1 << 8,
-	MTHCA_FLAG_SINAI_OPT  = 1 << 9
+	MTHCA_FLAG_MSI_X      = 1 << 3,
+	MTHCA_FLAG_NO_LAM     = 1 << 4,
+	MTHCA_FLAG_FMR        = 1 << 5,
+	MTHCA_FLAG_MEMFREE    = 1 << 6,
+	MTHCA_FLAG_PCIE       = 1 << 7,
+	MTHCA_FLAG_SINAI_OPT  = 1 << 8
 };
 
 enum {