Remove backwards compatible field access

Author: omus

src/Sinks/datetime_rotation.jl

@@ -71,7 +71,7 @@ function DatetimeRotatingFileLogger(f::Union{Function,Nothing}, dir, filename_pa
 end
 
 similar_logger(::SimpleLogger, io) = SimpleLogger(io, BelowMinLevel)
-similar_logger(l::FormatLogger, io) = FormatLogger(l.f, io, l.always_flush)
+similar_logger(l::FormatLogger, io) = FormatLogger(l.formatter, io, l.always_flush)
 function reopen!(drfl::DatetimeRotatingFileLogger)
     if drfl.current_file !== nothing
         # close the old IOStream and pass the file to the callback

src/Sinks/formatlogger.jl

@@ -62,12 +62,3 @@ end
 shouldlog(logger::FormatLogger, arg...) = true
 min_enabled_level(logger::FormatLogger) = BelowMinLevel
 catch_exceptions(logger::FormatLogger) = true # Or false? SimpleLogger doesn't, ConsoleLogger does.
-
-# For backwards compatibility
-function Base.getproperty(logger::FormatLogger, f::Symbol)
-    return if f === :f
-        getfield(logger, :formatter)
-    else
-        getfield(logger, f)
-    end
-end