Delete unimplemented functions.
Delete unimplemented functions.

FE_PolyFace had a lot of functions in the header file that are
declared in the base class and implemented in some of the derived
finite element classes, but commented out in the current one.
Remove those -- there is no value leaving cruft in the header
file.

maieneuro/dealii,pesser/dealii,angelrca/dealii,pesser/dealii,spco/dealii,sairajat/dealii,Arezou-gh/dealii,ESeNonFossiIo/dealii,kalj/dealii,EGP-CIG-REU/dealii,danshapero/dealii,Arezou-gh/dealii,nicolacavallini/dealii,andreamola/dealii,johntfoster/dealii,YongYang86/dealii,naliboff/dealii,angelrca/dealii,Arezou-gh/dealii,maieneuro/dealii,adamkosik/dealii,ibkim11/dealii,kalj/dealii,nicolacavallini/dealii,kalj/dealii,ibkim11/dealii,sriharisundar/dealii,shakirbsm/dealii,adamkosik/dealii,johntfoster/dealii,EGP-CIG-REU/dealii,danshapero/dealii,Arezou-gh/dealii,nicolacavallini/dealii,JaeryunYim/dealii,kalj/dealii,naliboff/dealii,jperryhouts/dealii,naliboff/dealii,danshapero/dealii,sriharisundar/dealii,naliboff/dealii,naliboff/dealii,gpitton/dealii,ESeNonFossiIo/dealii,EGP-CIG-REU/dealii,johntfoster/dealii,danshapero/dealii,spco/dealii,maieneuro/dealii,jperryhouts/dealii,ibkim11/dealii,nicolacavallini/dealii,sriharisundar/dealii,spco/dealii,sriharisundar/dealii,johntfoster/dealii,sairajat/dealii,JaeryunYim/dealii,andreamola/dealii,ibkim11/dealii,adamkosik/dealii,adamkosik/dealii,JaeryunYim/dealii,johntfoster/dealii,gpitton/dealii,ibkim11/dealii,andreamola/dealii,shakirbsm/dealii,ibkim11/dealii,YongYang86/dealii,gpitton/dealii,sriharisundar/dealii,Arezou-gh/dealii,YongYang86/dealii,pesser/dealii,maieneuro/dealii,kalj/dealii,pesser/dealii,nicolacavallini/dealii,EGP-CIG-REU/dealii,spco/dealii,ESeNonFossiIo/dealii,andreamola/dealii,angelrca/dealii,shakirbsm/dealii,YongYang86/dealii,adamkosik/dealii,jperryhouts/dealii,sairajat/dealii,pesser/dealii,shakirbsm/dealii,andreamola/dealii,spco/dealii,JaeryunYim/dealii,angelrca/dealii,Arezou-gh/dealii,nicolacavallini/dealii,YongYang86/dealii,JaeryunYim/dealii,adamkosik/dealii,sairajat/dealii,shakirbsm/dealii,angelrca/dealii,jperryhouts/dealii,gpitton/dealii,kalj/dealii,johntfoster/dealii,YongYang86/dealii,pesser/dealii,shakirbsm/dealii,sriharisundar/dealii,JaeryunYim/dealii,gpitton/dealii,EGP-CIG-REU/dealii,danshapero/dealii,angelrca/dealii,kalj/dealii,maieneuro/dealii,gpitton/dealii,andreamola/dealii,nicolacavallini/dealii,ibkim11/dealii,johntfoster/dealii,pesser/dealii,jperryhouts/dealii,gpitton/dealii,ESeNonFossiIo/dealii,danshapero/dealii,sairajat/dealii,spco/dealii,naliboff/dealii,naliboff/dealii,ESeNonFossiIo/dealii,maieneuro/dealii,ESeNonFossiIo/dealii,jperryhouts/dealii,Arezou-gh/dealii,angelrca/dealii,sriharisundar/dealii,JaeryunYim/dealii,YongYang86/dealii,andreamola/dealii,sairajat/dealii,sairajat/dealii,adamkosik/dealii,EGP-CIG-REU/dealii,EGP-CIG-REU/dealii,danshapero/dealii,jperryhouts/dealii,spco/dealii,maieneuro/dealii,ESeNonFossiIo/dealii,shakirbsm/dealii