fastboot: sparse: remove session-id logic

This "session-id" alogrithm is not required, and currently corrupts
the stored image whenever more the one "session" is required.

Signed-off-by: Steve Rae <srae@broadcom.com>
diff --git a/include/fb_mmc.h b/include/fb_mmc.h
index 978a139..402ba9b 100644
--- a/include/fb_mmc.h
+++ b/include/fb_mmc.h
@@ -4,7 +4,6 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-void fb_mmc_flash_write(const char *cmd, unsigned int session_id,
-			void *download_buffer, unsigned int download_bytes,
-			char *response);
+void fb_mmc_flash_write(const char *cmd, void *download_buffer,
+			unsigned int download_bytes, char *response);
 void fb_mmc_erase(const char *cmd, char *response);