Revert "Added the ability to associate trace information with failing specs"

Pushing this back to 4.0 in hopes of increasing the chance that third
party reporters will notice it and add support.

This reverts commit 7a289f1de7.

src/core/Spec.js

@@ -68,9 +68,8 @@ getJasmineRequireObj().Spec = function(j$) {
      * @property {String} status - Once the spec has completed, this string represents the pass/fail status of this spec.
      * @property {number} duration - The time in ms used by the spec execution, including any before/afterEach.
      * @property {Object} properties - User-supplied properties, if any, that were set using {@link Env#setSpecProperty}
-     * @property {TraceEntry[]|null} trace - Trace messages, if any, that were logged using {@link Env#trace} during a failing spec.
      * @since 2.0.0
-     */
+x     */
     this.result = {
       id: this.id,
       description: this.description,
@@ -80,8 +79,7 @@ getJasmineRequireObj().Spec = function(j$) {
       deprecationWarnings: [],
       pendingReason: '',
       duration: null,
-      properties: null,
-      trace: null
+      properties: null
     };
   }
 
@@ -126,11 +124,6 @@ getJasmineRequireObj().Spec = function(j$) {
         self.queueableFn.fn = null;
         self.result.status = self.status(excluded, failSpecWithNoExp);
         self.result.duration = self.timer.elapsed();
-
-        if (self.result.status !== 'failed') {
-          self.result.trace = null;
-        }
-
         self.resultCallback(self.result, done);
       }
     };
@@ -242,20 +235,6 @@ getJasmineRequireObj().Spec = function(j$) {
     );
   };
 
-  Spec.prototype.trace = function(msg) {
-    if (!this.result.trace) {
-      this.result.trace = [];
-    }
-
-    /**
-     * @typedef TraceEntry
-     * @property {String} message - The message that was passed to {@link Env#trace}.
-     * @property {number} timestamp - The time when the entry was added, in
-     * milliseconds from the spec's start time
-     */
-    this.result.trace.push({ message: msg, timestamp: this.timer.elapsed() });
-  };
-
   var extractCustomPendingMessage = function(e) {
     var fullMessage = e.toString(),
       boilerplateStart = fullMessage.indexOf(Spec.pendingSpecExceptionMessage),