Remove deprecated SharedFunctionInfo::dont_cache predicate.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index ccf3506f272fb0b20101d8938aece144b51e4ec5..22b954d5a8ca554c037dabbc410b9c013e93e46c 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6855,9 +6855,6 @@ class SharedFunctionInfo: public HeapObject {
   // Indicates that code for this function cannot be compiled with Crankshaft.
   DECL_BOOLEAN_ACCESSORS(dont_crankshaft)
 
-  // Indicates that code for this function cannot be cached.
-  DECL_BOOLEAN_ACCESSORS(dont_cache)
-
   // Indicates that code for this function cannot be flushed.
   DECL_BOOLEAN_ACCESSORS(dont_flush)
 
@@ -7120,7 +7117,6 @@ class SharedFunctionInfo: public HeapObject {
     kNameShouldPrintAsAnonymous,
     kIsFunction,
     kDontCrankshaft,
-    kDontCache,
     kDontFlush,
     kIsArrow,
     kIsGenerator,