diff --git a/packages/flutter/lib/src/foundation/unsupported.dart b/packages/flutter/lib/src/foundation/unsupported.dart
deleted file mode 100644
index 7ad4207f1e5..00000000000
--- a/packages/flutter/lib/src/foundation/unsupported.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-/// The largest SMI value.
-///
-/// See <https://www.dartlang.org/articles/numeric-computation/#smis-and-mints>
-///
-/// When compiling to JavaScript, this value is not supported since it is
-/// larger than the maximum safe 32bit integer.
-const int kMaxUnsignedSMI = 0x3FFFFFFFFFFFFFFF;
\ No newline at end of file
diff --git a/packages/flutter/lib/src/foundation/unsupported_web.dart b/packages/flutter/lib/src/foundation/unsupported_web.dart
deleted file mode 100644
index 8a231004847..00000000000
--- a/packages/flutter/lib/src/foundation/unsupported_web.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-/// The largest SMI value.
-///
-/// See <https://www.dartlang.org/articles/numeric-computation/#smis-and-mints>
-///
-/// When compiling to JavaScript, this value is not supported since it is
-/// larger than the maximum safe 32bit integer.
-const int kMaxUnsignedSMI = 0;
\ No newline at end of file