Follow changes in LHCb!2854 -- cleanup UT code

• replace detType() with "UT"
• remove use of setForcedInit() which is now default
• remove use of `setDetType("UT") as "UT" is the (only) possible value

must be applied in conjunction with LHCb!2854 (merged) and Boole!326 (merged)

UT/UTAlgorithms/src/UTClusterContainerCopy.cpp

@@ -37,8 +37,7 @@ public:
   StatusCode       finalize() override;
 
 private:
-  PublicToolHandle<IUTClusterSelector>           m_clusterSelector{this, "Selector",
-                                                         "UTSelectClustersByChannel/" + detType() + "Selector"};
+  PublicToolHandle<IUTClusterSelector> m_clusterSelector{this, "Selector", "UTSelectClustersByChannel/UTSelector"};
   mutable Gaudi::Accumulators::BinomialCounter<> m_selected{this, "fraction of clusters selected"};
 };