For #10426: Removes installation ping GAID (#10532)

app/metrics.yaml

@@ -2073,19 +2073,6 @@ installation:
     notification_emails:
       - fenix-core@mozilla.com
     expires: "2020-09-01"
-  identifier:
-    send_in_pings:
-      - installation
-    type: string
-    description: |
-      The hashed and salted GAID. Used for a short term installation validation test.
-    bugs:
-      - https://github.com/mozilla-mobile/fenix/issues/10426
-    data_reviews:
-      - https://github.com/mozilla-mobile/fenix/pull/10446#issuecomment-624816258
-    notification_emails:
-      - fenix-core@mozilla.com
-    expires: "2020-05-10"
 
 browser.search:
     with_ads:

app/src/main/java/org/mozilla/fenix/components/metrics/InstallationPing.kt

@@ -64,10 +64,6 @@ class InstallationPing(private val context: Context) {
             }
 
             CoroutineScope(Dispatchers.IO).launch {
-                MetricsUtils.getHashedIdentifier(context)?.let {
-                    Installation.identifier.set(it)
-                }
-
                 Pings.installation.submit()
                 markAsTriggered()
             }

docs/metrics.md

@@ -223,7 +223,6 @@ The following metrics are added to the ping:
 | installation.adgroup |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |The name of the AdGroup that was used to source this installation.  |[1](https://github.com/mozilla-mobile/fenix/pull/8074#issuecomment-586480836)||2020-09-01 |
 | installation.campaign |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |The name of the campaign that is responsible for this installation.  |[1](https://github.com/mozilla-mobile/fenix/pull/8074#issuecomment-586512202)||2020-09-01 |
 | installation.creative |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |The identifier of the creative material that the user interacted with.  |[1](https://github.com/mozilla-mobile/fenix/pull/8074#issuecomment-586512202)||2020-09-01 |
-| installation.identifier |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |The hashed and salted GAID. Used for a short term installation validation test.  |[1](https://github.com/mozilla-mobile/fenix/pull/10446#issuecomment-624816258)||2020-05-10 |
 | installation.network |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |The name of the Network that sourced this installation.  |[1](https://github.com/mozilla-mobile/fenix/pull/8074#issuecomment-586512202)||2020-09-01 |
 | installation.timestamp |[datetime](https://mozilla.github.io/glean/book/user/metrics/datetime.html) |The date and time of the installation.  |[1](https://github.com/mozilla-mobile/fenix/pull/8074#issuecomment-586512202)||2020-09-01 |