diff --git a/X42-BlockCore b/X42-BlockCore
deleted file mode 160000
index 9a37d8cc..00000000
--- a/X42-BlockCore
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 9a37d8cc0d1dfcc6e0229247bc2ca1ee64e1209d
diff --git a/city-chain b/city-chain
deleted file mode 160000
index f9d527c1..00000000
--- a/city-chain
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@@ -1 +0,0 @@
-Subproject commit f9d527c132cbbbcb43e59269f3d3c045e67dde06