refact: simplify EOS subclass constructor

[asmfstatoil]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 25.00000% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 34.68%. Comparing base (720ebe4) to head (23342e9).

❗ Current head 23342e9 differs from pull request most recent head fe02768. Consider uploading reports for the commit fe02768 to get more accurate results

Files	Patch %	Lines
.../main/java/neqsim/thermo/system/SystemBWRSEos.java	0.00%	1 Missing ⚠️
...java/neqsim/thermo/system/SystemDesmukhMather.java	0.00%	1 Missing ⚠️
.../main/java/neqsim/thermo/system/SystemDuanSun.java	0.00%	1 Missing ⚠️
...n/java/neqsim/thermo/system/SystemGERG2004Eos.java	0.00%	1 Missing ⚠️
...main/java/neqsim/thermo/system/SystemGEWilson.java	0.00%	1 Missing ⚠️
...java/neqsim/thermo/system/SystemKentEisenberg.java	0.00%	1 Missing ⚠️
src/main/java/neqsim/thermo/system/SystemNRTL.java	0.00%	1 Missing ⚠️
...ain/java/neqsim/thermo/system/SystemPrEos1978.java	0.00%	1 Missing ⚠️
...rc/main/java/neqsim/thermo/system/SystemRKEos.java	0.00%	1 Missing ⚠️
...c/main/java/neqsim/thermo/system/SystemTSTEos.java	0.00%	1 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #953   +/-   ##
=========================================
  Coverage     34.68%   34.68%           
+ Complexity     5275     5274    -1     
=========================================
  Files           700      700           
  Lines         69613    69601   -12     
  Branches       7984     7984           
=========================================
- Hits          24143    24139    -4     
+ Misses        43988    43980    -8     
  Partials       1482     1482           

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[EvenSol]

good update!