[heap] Remove max executable size configuration.

src/heap/spaces.h

Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index 5a57a30a30dd3a7d78fd3999d5a4556005725133..b230e552a881e6007741f1846f889d3d5a8906a8 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -1273,8 +1273,7 @@ class V8_EXPORT_PRIVATE MemoryAllocator {
 
   // Initializes its internal bookkeeping structures.
   // Max capacity of the total space and executable memory limit.
-  bool SetUp(size_t max_capacity, size_t capacity_executable,
-             size_t code_range_size);
+  bool SetUp(size_t max_capacity, size_t code_range_size);
 
   void TearDown();
 
@@ -1305,13 +1304,6 @@ class V8_EXPORT_PRIVATE MemoryAllocator {
     return capacity_ < size ? 0 : capacity_ - size;
   }
 
-  // Returns the maximum available executable bytes of heaps.
-  size_t AvailableExecutable() {
-    const size_t executable_size = SizeExecutable();
-    if (capacity_executable_ < executable_size) return 0;
-    return capacity_executable_ - executable_size;
-  }
-
   // Returns maximum available bytes that the old space can have.
   size_t MaxAvailable() {
     return (Available() / Page::kPageSize) * Page::kAllocatableMemory;
@@ -1410,8 +1402,6 @@ class V8_EXPORT_PRIVATE MemoryAllocator {
 
   // Maximum space size in bytes.
   size_t capacity_;
-  // Maximum subset of capacity_ that can be executable
-  size_t capacity_executable_;
 
   // Allocated space size in bytes.
   base::AtomicNumber<size_t> size_;