[fuchsia_system_metrics] Remove memory metric. Migrated to memory project.

Wait until this CL is landed:
https://fuchsia-review.googlesource.com/c/fuchsia/+/351355/

Bug: 40088

Change-Id: I3cb99a70bbad4785650664b27a1a358dc369fbc2
diff --git a/fuchsia/fuchsia_system_metrics/metrics.yaml b/fuchsia/fuchsia_system_metrics/metrics.yaml
index cb4e38d..d3e3c78 100644
--- a/fuchsia/fuchsia_system_metrics/metrics.yaml
+++ b/fuchsia/fuchsia_system_metrics/metrics.yaml
@@ -114,105 +114,6 @@
     expiration_date: "2020/01/17"
 
 #####################################################################
-# fuchsia memory_usage
-#
-# For every minute, we log the memory usage in bytes with breakdowns:
-#####################################################################
-- id: 3
-  metric_name: fuchsia_memory_experimental
-  metric_type: MEMORY_USAGE
-  metric_dimensions:
-    - dimension: memory_breakdown
-      event_codes:
-        0: TotalBytes
-        1: UsedBytes
-        2: FreeBytes
-        3: VmoBytes
-        4: KernelFreeHeapBytes
-        5: MmuBytes
-        6: IpcBytes
-        7: KernelTotalHeapBytes
-        8: WiredBytes
-        9: OtherBytes
-  reports:
-      #####################################################################
-      # fuchsia_memory_usage
-      #
-      #####################################################################
-    - report_name: fuchsia_memory_usage_numeric_aggr_experimental
-      id: 490323763 # legacy long report_id
-      report_type: NUMERIC_AGGREGATION
-      percentiles: [5, 10, 90, 95, 99]
-      system_profile_field: [BOARD_NAME, PRODUCT_NAME, ARCH, SYSTEM_VERSION, OS, CHANNEL]
-    - report_name: fuchsia_memory_usage_histogram_experimental_2
-      id: 2249350189 # legacy long report_id
-      report_type: INT_RANGE_HISTOGRAM
-      system_profile_field: [BOARD_NAME, PRODUCT_NAME, ARCH, SYSTEM_VERSION, OS, CHANNEL]
-      int_buckets:
-        linear:
-          floor: 0
-          num_buckets: 154
-          step_size: 10485760 # 10 MB
-  meta_data:
-    max_release_stage: GA
-    expiration_date: "2020/10/25"
-
-#####################################################################
-# fuchsia memory_usage with up time breakdown
-#
-# For every minute, we log the memory usage in bytes with breakdowns:
-#####################################################################
-- id: 4
-  metric_name: fuchsia_memory_experimental_2
-  metric_type: MEMORY_USAGE
-  metric_dimensions:
-    - dimension: memory_breakdown
-      event_codes:
-        0: TotalBytes
-        1: UsedBytes
-        2: FreeBytes
-        3: VmoBytes
-        4: KernelFreeHeapBytes
-        5: MmuBytes
-        6: IpcBytes
-        7: KernelTotalHeapBytes
-        8: WiredBytes
-        9: OtherBytes
-    - dimension: time_since_boot
-      event_codes:
-        0: Up
-        1: UpOneMinute
-        2: UpThirtyMinutes
-        3: UpOneHour
-        4: UpSixHours
-        5: UpTwelveHours
-        6: UpOneDay
-        7: UpTwoDays
-        8: UpThreeDays
-        9: UpSixDays
-  reports:
-      #####################################################################
-      # fuchsia_memory_usage
-      #####################################################################
-    - report_name: fuchsia_memory_usage_numeric_aggr_experimental
-      id: 490323763 # legacy long report_id
-      report_type: NUMERIC_AGGREGATION
-      percentiles: [5, 10, 90, 95, 99]
-      system_profile_field: [BOARD_NAME, PRODUCT_NAME, ARCH, SYSTEM_VERSION, OS, CHANNEL]
-    - report_name: fuchsia_memory_usage_histogram_experimental
-      id: 57178942 # legacy long report_id
-      report_type: INT_RANGE_HISTOGRAM
-      system_profile_field: [BOARD_NAME, PRODUCT_NAME, ARCH, SYSTEM_VERSION, OS, CHANNEL]
-      int_buckets:
-        linear:
-          floor: 0
-          num_buckets: 154
-          step_size: 10485760 # 10 MB
-  meta_data:
-    max_release_stage: GA
-    expiration_date: "2020/10/25"
-
-#####################################################################
 # ****** WILL DEPRECATE. Use id 8 below instead. ******
 # fuchsia CPU% * 100 averaged over all cores taken per sec
 #