fix compilation error on fake platform

Author: chaitanya jandhyala

src/platform/fake/ConfigurationManagerImpl.h

@@ -90,11 +90,6 @@ class ConfigurationManagerImpl : public ConfigurationManager
     CHIP_ERROR StoreUniqueId(const char * uniqueId, size_t uniqueIdLen) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR GenerateUniqueId(char * buf, size_t bufSize) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
 
-    CHIP_ERROR GenerateUniqueId(char * buf, size_t bufSize) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
-    CHIP_ERROR GenerateUniqueId(char * buf, size_t bufSize) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
-    CHIP_ERROR GenerateUniqueId(char * buf, size_t bufSize) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
-    CHIP_ERROR GenerateUniqueId(char * buf, size_t bufSize) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
-
     CHIP_ERROR StoreVendorName(const char * vendorName, size_t vendorNameLen) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR StoreProductName(const char * productName, size_t productNameLen) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR StoreHardwareVersionString(const char * hardwareVersionString, size_t hardwareVersionStringLen) override