Remove unused CFG_EEPROM_PAGE_WRITE_ENABLE references

doc/README.PIP405

include/configs/APC405.h

include/configs/ASH405.h

include/configs/B2.h

include/configs/CATcenter.h

include/configs/CMS700.h

include/configs/CPCI2DP.h

include/configs/CPCI405.h

include/configs/CPCI4052.h

include/configs/CPCI405AB.h

include/configs/CPCI405DT.h

include/configs/CPCIISER4.h

include/configs/DP405.h

include/configs/DU405.h

include/configs/DU440.h

include/configs/G2000.h

include/configs/HH405.h

include/configs/HUB405.h

include/configs/MIP405.h

include/configs/MPC8323ERDB.h