Proposal to remove unnecessary difference of 系 component in TW/HK

[NightFurySL2001]

Currently a separate glyph is provided for 系 component in TW/HK, with the top throw stroke (丿) varying from not touching (in ExtraLight) to touching (in Heavy) the bottom 糸 component.

However, current TW/HK does not mandate that the two components must not be touching. TW education reference only say there is a throw stroke above 糸, but nothing about if it should be touching or not and the relative lengths. HK reference does not state if the touching are required o Given the loose requirement, I will say that the 系 component is unnecessarily differentiated and just wasting glyph counts.

Thus, I would like to propose using the CN version of 系 in TW/HK. The CN version offers a better balance (both geometric balance and white space balance) relative to TW/HK. It also avoid the unclear touching-or-not problem that currently exist across weights and characters, such as 遜 which is clearly touching at ExtraLight.

By merging 系 component in TW/HK to CN, 11 glyphs can be freed up for other usages such as the pending Macau extension or GB18030-2022 compliance.

11 TW/HK glyphs that can be removed and merged to CN: 係喺孫愻(HK)搎槂猻綔緐緜鯀
15 TW/HK glyphs that need to be edited: 愻(TW) 懸(TW) 懸(HK) 縣(TW) 縣(HK) 繇(TW) 繇(HK) 纛(TW) 纛(HK) 蓀蘨㘥𤄏𦅚𧪾
No changes needed (probably): 遜(TW) 遜(HK)