Remove the empty glyph from 1000-em variants at codepoint U+0045 (Latin capital letter `E`)
#### 🗹 Requirements

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#### 🎯 Subject of the issue

All 1000-em variants contain an empty glyph at codepoint U+0045 (Latin capital letter E)

#### 🔧 Your Setup

- _Which font are you using?_ - Fira Code with fontconfig (Arch package [`ttf-nerd-fonts-symbols-mono`](https://archlinux.org/packages/community/any/ttf-nerd-fonts-symbols-mono/))
- _Which terminal emulator are you using (e.g. `iterm2`, `urxvt`, `gnome`, `konsole`)?_ GNOME terminal
- _Are you using OS X, Linux or Windows? And which specific version or distribution?_ Arch Linux

#### ★ Screenshots (Optional)

Looking at TTF in fontforge (https://github.com/ryanoasis/nerd-fonts/issues/581#issuecomment-837335900)

![image](https://user-images.githubusercontent.com/13703064/149715648-40e3137f-119c-4e4c-8b4b-ead93ca796fa.png)

#### Suggestion

Remove the empty glyph from 1000-em variants at codepoint U+0045 (Latin capital letter `E`). This will also fix #581.