[SCEV] Remove newline after predicates in dump

update_analyze_test_checks.py will now insert check lines for
empty lines, which means that all the existing test coverage will
have a spurious change to check for the newline after "Predicates:".

I don't think we actually want to have that newline, so drop it
before it gets into more test coverage.

llvm/lib/Analysis/ScalarEvolution.cpp

@@ -13437,9 +13437,8 @@ static void PrintLoopInfo(raw_ostream &OS, ScalarEvolution *SE,
     for (const auto *P : Preds)
       P->print(OS, 4);
   } else {
-    OS << "Unpredictable predicated backedge-taken count. ";
+    OS << "Unpredictable predicated backedge-taken count.\n";
   }
-  OS << "\n";
 
   if (SE->hasLoopInvariantBackedgeTakenCount(L)) {
     OS << "Loop ";

llvm/test/Analysis/ScalarEvolution/ptrtoint-constantexpr-loop.ll

@@ -353,7 +353,6 @@ define i64 @sext_like_noop(i32 %n) {
 ; PTR64_IDX64-NEXT:  Loop %for.body: symbolic max backedge-taken count is (-2 + (trunc i64 (ptrtoint ptr @sext_like_noop to i64) to i32))
 ; PTR64_IDX64-NEXT:  Loop %for.body: Predicated backedge-taken count is (-2 + (trunc i64 (ptrtoint ptr @sext_like_noop to i64) to i32))
 ; PTR64_IDX64-NEXT:   Predicates:
-; PTR64_IDX64-EMPTY:
 ; PTR64_IDX64-NEXT:  Loop %for.body: Trip multiple is 1
 ;
 ; PTR64_IDX32-LABEL: 'sext_like_noop'
@@ -372,7 +371,6 @@ define i64 @sext_like_noop(i32 %n) {
 ; PTR64_IDX32-NEXT:  Loop %for.body: symbolic max backedge-taken count is (-2 + ptrtoint (ptr @sext_like_noop to i32))
 ; PTR64_IDX32-NEXT:  Loop %for.body: Predicated backedge-taken count is (-2 + ptrtoint (ptr @sext_like_noop to i32))
 ; PTR64_IDX32-NEXT:   Predicates:
-; PTR64_IDX32-EMPTY:
 ; PTR64_IDX32-NEXT:  Loop %for.body: Trip multiple is 1
 ;
 ; PTR16_IDX16-LABEL: 'sext_like_noop'
@@ -391,7 +389,6 @@ define i64 @sext_like_noop(i32 %n) {
 ; PTR16_IDX16-NEXT:  Loop %for.body: symbolic max backedge-taken count is (-2 + (zext i16 (ptrtoint ptr @sext_like_noop to i16) to i32))<nsw>
 ; PTR16_IDX16-NEXT:  Loop %for.body: Predicated backedge-taken count is (-2 + (zext i16 (ptrtoint ptr @sext_like_noop to i16) to i32))<nsw>
 ; PTR16_IDX16-NEXT:   Predicates:
-; PTR16_IDX16-EMPTY:
 ; PTR16_IDX16-NEXT:  Loop %for.body: Trip multiple is 1
 ;
 entry: