Revert "[Flang][OpenMP] Fix to support privatisation of alloc strings (#71204)"

This reverts commit 192bee0.
Reverting to fix the CI.  https://lab.llvm.org/buildbot/#/builders/21/builds/84995

Author: kiranchandramohan

flang/lib/Lower/Bridge.cpp

@@ -677,27 +677,18 @@ class FirConverter : public Fortran::lower::AbstractConverter {
             if (auto seqTy = symType.dyn_cast<fir::SequenceType>()) {
               fir::ExtendedValue read = fir::factory::genMutableBoxRead(
                   *builder, loc, box, /*mayBePolymorphic=*/false);
-              if (auto read_arr_box = read.getBoxOf<fir::ArrayBoxValue>()) {
-                fir::factory::genInlinedAllocation(
-                    *builder, loc, *new_box, read_arr_box->getLBounds(),
-                    read_arr_box->getExtents(),
-                    /*lenParams=*/std::nullopt, name,
-                    /*mustBeHeap=*/true);
-              } else if (auto read_char_arr_box =
-                             read.getBoxOf<fir::CharArrayBoxValue>()) {
-                fir::factory::genInlinedAllocation(
-                    *builder, loc, *new_box, read_char_arr_box->getLBounds(),
-                    read_char_arr_box->getExtents(),
-                    read_char_arr_box->getLen(), name,
-                    /*mustBeHeap=*/true);
-              } else {
-                TODO(loc, "Unhandled allocatable box type");
-              }
+              auto read_box = read.getBoxOf<fir::ArrayBoxValue>();
+              fir::factory::genInlinedAllocation(
+                  *builder, loc, *new_box, read_box->getLBounds(),
+                  read_box->getExtents(),
+                  /*lenParams=*/std::nullopt, name,
+                  /*mustBeHeap=*/true);
             } else {
               fir::factory::genInlinedAllocation(
-                  *builder, loc, *new_box, box.getMutableProperties().lbounds,
-                  box.getMutableProperties().extents,
-                  box.nonDeferredLenParams(), name,
+                  *builder, loc, *new_box,
+                  new_box->getMutableProperties().lbounds,
+                  new_box->getMutableProperties().extents,
+                  /*lenParams=*/std::nullopt, name,
                   /*mustBeHeap=*/true);
             }
           });