remove uncle blocks

src/side_chain.cpp

@@ -43,9 +43,9 @@
 static constexpr char log_category_prefix[] = "SideChain ";
 
 static constexpr uint64_t MIN_DIFFICULTY = 100000;
-static constexpr size_t UNCLE_BLOCK_DEPTH = 3;
+static constexpr size_t UNCLE_BLOCK_DEPTH = 0;
 
-static_assert(1 <= UNCLE_BLOCK_DEPTH && UNCLE_BLOCK_DEPTH <= 10, "Invalid UNCLE_BLOCK_DEPTH");
+// static_assert(1 <= UNCLE_BLOCK_DEPTH && UNCLE_BLOCK_DEPTH <= 10, "Invalid UNCLE_BLOCK_DEPTH");
 
 static constexpr uint64_t MONERO_BLOCK_TIME = 300;