Always build with same gcc which was used for open62541

as beremiz-ide will use open62541's library for compiling
PLC projects and both should have been compiled with same gcc.

software/beremiz-ide/software.cfg

@@ -37,10 +37,6 @@ parts +=
   instance
   xdpyinfo
 
-[gcc]
-# Always build GCC for Fortran (see openblas).
-max_version = 0
-
 [python]
 # Beremiz works with python2.7 for now, the code is not yet upgraded for python3
 part = python2.7