Remove unnecessary patch file for TCP Socket Tracker crash

lineage_src_root/patch_tcpsockettracker-crash.patch

@@ -1,87 +0,0 @@
-Original commit: https://github.com/DerpFest-11/packages_modules_NetworkStack/commit/22fd53a977eeaf4e36be7bf6358ecf2c2737fa5e
-
-From 22fd53a977eeaf4e36be7bf6358ecf2c2737fa5e Mon Sep 17 00:00:00 2001
-From: Bruno Martins <bgcngm@gmail.com>
-Date: Wed, 14 Oct 2020 16:08:13 +0100
-Subject: [PATCH] TcpSocketTracker: Opt-out for TCP info parsing on legacy
- kernels
-
-This feature requires netlink features that are unsupported on
-kernel versions lower than 4.4, therefore opt-out for it in such
-cases and avoid constantly crashing TcpSocketTracker.
-
-Change-Id: I128ed1d0dcb6ca07eef1179f1ef036ccaad64e52
----
- .../netlink/TcpSocketTracker.java             | 36 ++++++++++++++++++-
- 1 file changed, 35 insertions(+), 1 deletion(-)
-
-diff --git a/packages/modules/NetworkStack/src/com/android/networkstack/netlink/TcpSocketTracker.java b/packages/modules/NetworkStack/src/com/android/networkstack/netlink/TcpSocketTracker.java
-index ef33f13..f39518f 100644
---- a/packages/modules/NetworkStack/src/com/android/networkstack/netlink/TcpSocketTracker.java
-+++ b/packages/modules/NetworkStack/src/com/android/networkstack/netlink/TcpSocketTracker.java
-@@ -57,8 +57,10 @@
- import android.system.ErrnoException;
- import android.system.Os;
- import android.system.StructTimeval;
-+import android.text.TextUtils;
- import android.util.Log;
- import android.util.LongSparseArray;
-+import android.util.Pair;
- import android.util.SparseArray;
- 
- import androidx.annotation.NonNull;
-@@ -77,6 +79,8 @@
- import java.util.ArrayList;
- import java.util.Base64;
- import java.util.List;
-+import java.util.regex.Matcher;
-+import java.util.regex.Pattern;
- 
- /**
-  * Class for NetworkStack to send a SockDiag request and parse the returned tcp info.
-@@ -431,6 +435,35 @@ private void log(final String str) {
-         if (DBG) Log.d(TAG, str);
-     }
- 
-+    private static boolean isTcpInfoParsingSupportedByKernel() {
-+        final String kVersionString = Os.uname().release;
-+        return compareMajorMinorVersion(kVersionString, "4.4") >= 0;
-+    }
-+
-+    private static int compareMajorMinorVersion(final String s1, final String s2) {
-+        final Pair<Integer, Integer> v1 = getVersionFromString(s1);
-+        final Pair<Integer, Integer> v2 = getVersionFromString(s2);
-+
-+        if (v1.first == v2.first) {
-+            return Integer.compare(v1.second, v2.second);
-+        } else {
-+            return Integer.compare(v1.first, v2.first);
-+        }
-+    }
-+
-+    private static Pair<Integer, Integer> getVersionFromString(String version) {
-+        // Only gets major and minor number of the version string.
-+        final Pattern versionPattern = Pattern.compile("^(\\d+)(\\.(\\d+))?.*");
-+        final Matcher m = versionPattern.matcher(version);
-+        if (m.matches()) {
-+            final int major = Integer.parseInt(m.group(1));
-+            final int minor = TextUtils.isEmpty(m.group(3)) ? 0 : Integer.parseInt(m.group(3));
-+            return new Pair<>(major, minor);
-+        } else {
-+            return new Pair<>(0, 0);
-+        }
-+    }
-+
-     /**
-      * Corresponds to {@code struct rtattr} from bionic/libc/kernel/uapi/linux/rtnetlink.h
-      *
-@@ -578,7 +611,8 @@ public int getDeviceConfigPropertyInt(@NonNull final String namespace,
-         public boolean isTcpInfoParsingSupported() {
-             // Request tcp info from NetworkStack directly needs extra SELinux permission added
-             // after Q release.
--            return ShimUtils.isReleaseOrDevelopmentApiAbove(Build.VERSION_CODES.Q);
-+            return ShimUtils.isReleaseOrDevelopmentApiAbove(Build.VERSION_CODES.Q) &&
-+                    isTcpInfoParsingSupportedByKernel();
-         }
- 
-         /**