binman: Drop use of tools.FromUnicode()

This function has been removed now that everything is migrated to
Python 3. Drop it.

BUG=b:190384016, b:190560337
TEST='binman test'
run through CQ

Signed-off-by: Simon Glass <sjg@chromium.org>
Change-Id: If655787170e40886ccef60362b4192eb36a97531
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/u-boot/+/2949651
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
diff --git a/tools/binman/etype/fmap.py b/tools/binman/etype/fmap.py
index fc49029..cac99b6 100644
--- a/tools/binman/etype/fmap.py
+++ b/tools/binman/etype/fmap.py
@@ -59,8 +59,7 @@
                 # Drop @ symbols in name
                 name = entry.name.replace('@', '')
                 areas.append(
-                    fmap_util.FmapArea(pos, entry.size or 0,
-                                       tools.FromUnicode(name), 0))
+                    fmap_util.FmapArea(pos, entry.size or 0, name, 0))
                 for subentry in entries.values():
                     _AddEntries(areas, subentry)
             else: