Remove telemetry

[tinchodias]

The purpose of Telemetry is inspecting details of the execution of a space.

Why removing it?

Reason 1: it obscures the Bloc code by this kind of permanent instrumentation. For example:

			self telemetry
				timeSync: [ 'Layout ', self class name ]
				during: [ self onLayout: aRectangle context: aBlElementBoundsUpdateContext ] ].

instead of just having self onLayout: aRectangle context: aBlElementBoundsUpdateContext. When the telemetry is enabled, the time to run the block is measured, and emitted in a beacon signal to be logged.

Reason 2: the telemetry infrastructure involves about 11 classes that contributes to make Bloc harder to comprehend to new users, while general profiling tools and programmer's creativity are enough to get the same conclusions. It may be that stubborn or rustic and I'm missing something important, but I don't find the need for this special tool to profile Bloc.

So, I propose to replace it by this methodology:

• Using the general Pharo Profiler to analyze performance along a period of time.
• Inserting ad-hoc instrumentation profiling code, in cases that require catching a hiccup in some frame of an animation.

[jecisc]

I agree with the mail you sent on bloc ML

[plantec]

please go!