refactor(test): Simplify check_pubsub_subscribe_msgrcvtimeout.c #994

Job	Run time
Debug Build & Unit Tests (gcc)	3m 55s
Debug Build & Unit Tests (gcc, 32bit)	4m 23s
Debug Build & Unit Tests without Subscriptions (gcc)	2m 9s
Debug Build & Unit Tests with Diagnostics (gcc)	4m 6s
Debug Build & Unit Tests with multithreading (gcc)	2m 44s
Debug Build & Unit Tests with Alarms&Conditions (gcc)	13m 5s
Debug Build & Unit Tests (clang)	6m 2s
Debug Build & Unit Tests (tcc)	2m 43s
Encryption (MbedTLS) Build & Unit Tests (gcc)	3m 18s
PubSub Encryption (MbedTLS) Build & Unit Tests (gcc)	3m 36s
PubSub SKS Build & Unit Tests (gcc)	4m 28s
Encryption (OpenSSL) Build & Unit Tests (gcc)	2m 45s
Encryption (LibreSSL) Build & Unit Tests (gcc)	7m 31s
TPM Tool Build	3m 11s
Release Build	1m 31s
Amalgamation Build	56s
Amalgamation Build with Multithreading	1m 19s
Valgrind Build & Unit Tests with MbedTLS (gcc)	16m 56s
Valgrind Build & Unit Tests with OpenSSL (gcc)	20m 55s
Valgrind Examples with MbedTLS (gcc)	1h 9m 28s
Valgrind Examples with OpenSSL (gcc)	48m 48s
Clang Static Analyzer	4m 26s
Build All Companion Specifications	16m 49s
	4h 5m 4s

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