Revert #6536 types.h one line HAVE_PTHREAD

[gojimmypi]

Description

This update reverts one line of #6536 that was seen to be problematic in wolfCLU

Fixes zd# n/a

Testing

checked wolfCLU

#!/bin/bash
rm -rf /mnt/c/test/wolfssl-install/bin
rm -rf /mnt/c/test/wolfssl-install/include
rm -rf /mnt/c/test/wolfssl-install/lib
rm -rf /mnt/c/test/wolfssl-install/share

./configure --enable-wolfclu  --prefix=/mnt/c/test/wolfssl-install && make clean && make && make install

# make && make install && cd /mnt/c/test/wolfCLU-fix && make clean && make && cd /mnt/c/test/wolfssl-master

Default config, threading enabled:

./configure &&  make && ./wolfcrypt/test/testwolfcrypt

Forced single-thread. This was observed to have failed during PRB with prior changes:

 ./configure --enable-singlethreaded --disable-fastmath --enable-smallstack --enable-smallstackcache  --disable-shared  && make && ./wolfcrypt/test/testwolfcrypt 

• edit: for reference wolfSSL compiled to enable wolfCLU support, and install to /home/gojimmypi/wolfssl-install:

./configure --enable-wolfclu  --prefix=/home/gojimmypi/wolfssl-install
make clean && make && make install

wolfCLU configured to use specific /mnt/c/test/wolfssl-install

./configure --with-wolfssl=/mnt/c/test/wolfssl-install
make clean && make

Checklist

• added tests
• updated/added doxygen
• updated appropriate READMEs
• Updated manual and documentation