Revert "New NativeDaemonConnector protocol adds a seqnum."

Reverting because it seems to break `adb reboot`

This reverts commit dc58e73071aa829a5038caf37211f6b3e2d7b275.

Change-Id: Ib8cc4379254694398cbb7f3e7a64c20e1ed8c1ba
diff --git a/libsysutils/src/SocketClient.cpp b/libsysutils/src/SocketClient.cpp
index 6e270bd..722dcb2 100644
--- a/libsysutils/src/SocketClient.cpp
+++ b/libsysutils/src/SocketClient.cpp
@@ -17,11 +17,9 @@
         , mUid(-1)
         , mGid(-1)
         , mRefCount(1)
-        , mCmdNum(0)
 {
     pthread_mutex_init(&mWriteMutex, NULL);
     pthread_mutex_init(&mRefCountMutex, NULL);
-    pthread_mutex_init(&mCmdNumMutex, NULL);
 
     struct ucred creds;
     socklen_t szCreds = sizeof(creds);
@@ -48,20 +46,19 @@
     const char* fmt;
     char tmp[1];
     int  len;
-    int cmdNum = getCmdNum();
 
     if (addErrno) {
-        fmt = "%d %.3d %s (%s)";
+        fmt = "%.3d %s (%s)";
         arg = strerror(errno);
     } else {
-        fmt = "%d %.3d %s";
+        fmt = "%.3d %s";
         arg = NULL;
     }
     /* Measure length of required buffer */
-    len = snprintf(tmp, sizeof tmp, fmt, cmdNum, code, msg, arg);
+    len = snprintf(tmp, sizeof tmp, fmt, code, msg, arg);
     /* Allocate in the stack, then write to it */
     buf = (char*)alloca(len+1);
-    snprintf(buf, len+1, fmt, cmdNum, code, msg, arg);
+    snprintf(buf, len+1, fmt, code, msg, arg);
     /* Send the zero-terminated message */
     return sendMsg(buf);
 }
@@ -135,17 +132,3 @@
     }
     return deleteSelf;
 }
-
-void SocketClient::setCmdNum(int cmdNum) {
-    pthread_mutex_lock(&mCmdNumMutex);
-    mCmdNum = cmdNum;
-    pthread_mutex_unlock(&mCmdNumMutex);
-}
-
-int SocketClient::getCmdNum() {
-    int ret;
-    pthread_mutex_lock(&mCmdNumMutex);
-    ret = mCmdNum;
-    pthread_mutex_unlock(&mCmdNumMutex);
-    return ret;
-}