Update description to remove the outdated mention of user space timestamps

measure-analysis/measure-analysis.py

@@ -391,7 +391,7 @@ class MeasureSet:
                                                      "thread. The receiving board uses the SO_TIMESTAMPING option to see when "
                                                      "the packet entered the kernel, and generates timestamps with clock_gettime "
                                                      "once the packets enters userspace to compute the time the packet spent in "
-                                                     "kernel and user space.",
+                                                     "kernel space.",
 
                       'packet_send_timestamps':      "Similar to packet_recv_timestamps, but on the transmitting board. ",
 

measure-analysis/measure-report.md

@@ -69,7 +69,7 @@ none, 0h51, pfifo_fast, none (3077562) | -324.0000us | 162.0000us | 8.5575us   |
 
 ### packet_recv_timestamps results
 
-An UDP packet is periodically sent from one board to another using a real time thread. The receiving board uses the SO_TIMESTAMPING option to see when the packet entered the kernel, and generates timestamps with clock_gettime once the packets enters userspace to compute the time the packet spent in kernel and user space.
+An UDP packet is periodically sent from one board to another using a real time thread. The receiving board uses the SO_TIMESTAMPING option to see when the packet entered the kernel, and generates timestamps with clock_gettime once the packets enters userspace to compute the time the packet spent in kernel space.
 
 **Common test metadata:** Linux kernel version: 4.19, Boot Parameters: isolcpus, Interval: 1000us, ETF qdisc delta: 160us, Task priority: 99, Device and processor load: ssh, Test duration: 0h59, qdisc: etf, etf_offset: 600us, route: switch