property panel - Pad type items

Description

The property panel contains some questionable (in the sense - display useful or not?) information lines if a Pad is selected in the board:

• "Net" and "Net Name" seem to be always the same information
• Parent seems to point to the parent-footprint ID? (As the user can't see this information on any other place this is currently of no use).
• Pin Name refers to the corresponding name on the schematic symbol - useful information, but should be write-protected. (Or is it necessary for board-only designs without corresponding schematic?)
• Pin type (input/output/passive/...) - seems not useful in the board view (I think it's mostly important for ERC in schematic editor)

Steps to reproduce

KiCad Version

Application: KiCad PCB Editor (64-bit)

Version: (6.99.0-3174-g60f6bb8c77), release build

Libraries:
	wxWidgets 3.1.7
	FreeType 2.11.1
	HarfBuzz 4.2.0
	FontConfig 2.14.0

Platform: Windows 10 (build 19044), 64-bit edition, 64 bit, Little endian, wxMSW

	wxWidgets: 3.1.7 (wchar_t,wx containers)
	Boost: 1.79.0
	OCC: 7.6.0
	Curl: 7.83.1-DEV
	ngspice: 37
	Compiler: Visual C++ 1929 without C++ ABI

Build settings:
	KICAD_SPICE=ON