Delete rss_high_watermark_in_bytes field

Reading RSS high-water mark was moved to a separate atom.

Bug: 119598534
Test: atest UidAtomTests#testProcessMemoryState
Test: atest UidAtomTests#testNativeProcessMemoryState
Test: atest MemoryStatUtilTest
Change-Id: I18424ea3f0ab1555febe62df1be97b174e93a55c
diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index c8405a2..8567ff2 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -2543,10 +2543,7 @@
     // SWAP
     optional int64 swap_in_bytes = 8;
 
-    // RSS high watermark.
-    // Peak RSS usage of the process. Value is read from the VmHWM field in /proc/PID/status or
-    // from memory.max_usage_in_bytes under /dev/memcg if the device uses per-app memory cgroups.
-    // Deprecated: use ProcessMemoryHighWaterMark atom instead.
+    // Deprecated: use ProcessMemoryHighWaterMark atom instead. Always 0.
     optional int64 rss_high_watermark_in_bytes = 9 [deprecated = true];
 
     // Elapsed real time when the process started.
@@ -2573,9 +2570,7 @@
     // RSS
     optional int64 rss_in_bytes = 5;
 
-    // RSS high watermark.
-    // Peak RSS usage of the process. Value is read from the VmHWM field in /proc/PID/status.
-    // Deprecated: use ProcessMemoryHighWaterMark atom instead.
+    // Deprecated: use ProcessMemoryHighWaterMark atom instead. Always 0.
     optional int64 rss_high_watermark_in_bytes = 6 [deprecated = true];
 
     // Elapsed real time when the process started.