Bug 1753709 - Remove unused DelazificationOption. r=arai

Differential Revision: https://phabricator.services.mozilla.com/D138339

js/public/CompileOptions.h

@@ -82,18 +82,6 @@ enum class AsmJSOption : uint8_t {
    */                                                                          \
   _(ConcurrentDepthFirst)                                                      \
                                                                                \
-  /*                                                                           \
-   * Delazify functions in a breath first traversal of the code. (not          \
-   * implemented yet)                                                          \
-   */                                                                          \
-  _(ConcurrentBreathFirst)                                                     \
-                                                                               \
-  /*                                                                           \
-   * Delazify functions based on the frequency of names across all scripts     \
-   * pending for delazifications. (not implemented yet)                        \
-   */                                                                          \
-  _(ConcurrentMostFrequentNameFirst)                                           \
-                                                                               \
   /*                                                                           \
    * Parse everything eagerly, from the first parse.                           \
    *                                                                           \

js/src/vm/HelperThreads.cpp

@@ -931,17 +931,6 @@ bool DelazifyTask::init(
       // inner functions before the siblings functions.
       strategy = cx->make_unique<DepthFirstDelazification>();
       break;
-    case JS::DelazificationOption::ConcurrentBreathFirst:
-      // ConcurrentDepthFirst visit all functions to be delazified, visiting the
-      // siblings functions before the inner functions.
-      MOZ_CRASH("Strategy is not yet implemented");
-      break;
-    case JS::DelazificationOption::ConcurrentMostFrequentNameFirst:
-      // ConcurrentMostFrequentNameFirst uses the frequency of names to
-      // determine the order in which functions should be delazified. Unamed
-      // functions are delazified first.
-      MOZ_CRASH("Strategy is not yet implemented");
-      break;
     case JS::DelazificationOption::ParseEverythingEagerly:
       // ParseEverythingEagerly parse all functions eagerly, thus leaving no
       // functions to be parsed on demand.