FEM: Fix cxx typo and remove calculix from solvers tab in examples (#12876)

* FEM: remove calculix from solvers

* FEM: remove calculix from joint with ccxtools if branches

* FEM: remove calculix from its if

* FEM: fix cxx typo in translations

* FEM: fix cxx typo in classes name

* FEM: fix ccx typo in shortcuts

* FEM: convert FEM_*CcxTools to CamelCase

* FEM: remove tests related to calculix

* FEM: remove test_solver_calculix.py from Fem/CMakeLists.txt

* FEM: convert all 'CalculiXccxTools' to 'CalculiXCcxTools'

* FEM: revert changes in all *_*.ts files

* FEM: convert 'SolverCcxtools' to 'SolverCcxTools'

* FEM: convert remaining 'Ccxtools' to 'CcxTools'

src/Mod/Fem/ObjectsFem.py

@@ -879,11 +879,11 @@ def makeEquationMagnetodynamic2D(
     return obj
 
 
-def makeSolverCalculixCcxTools(
+def makeSolverCalculiXCcxTools(
     doc,
     name="SolverCcxTools"
 ):
-    """makeSolverCalculixCcxTools(document, [name]):
+    """makeSolverCalculiXCcxTools(document, [name]):
     makes a Calculix solver object for the ccx tools module"""
     obj = doc.addObject("Fem::FemSolverObjectPython", name)
     from femobjects import solver_ccxtools