delete some useless comments

Author: jerrychan7

src/UI/HowToPlayPage.html

@@ -1,5 +1,4 @@
 
-<!-- mcpage-how-to-play -->
 <style>
     :host {
         text-align: center;

src/UI/LoadTerrainPage.html

@@ -1,5 +1,4 @@
 
-<!-- mcpage-load-terrain -->
 <style>
     :host {
         text-align: center;

src/UI/MCButton.html

@@ -1,5 +1,4 @@
 
-<!-- mc-button -->
 <style>
     :host {
         display: inline-block;

src/UI/MCHotbar.html

@@ -1,5 +1,4 @@
 
-<!-- mc-hotbar -->
 <style>
     :host {
         --hotbar-width: 45vw;

src/UI/MCInventory.html

@@ -1,5 +1,4 @@
 
-<!-- mc-incentory -->
 <style>
     :host {
         overflow: hidden;

src/UI/MCMoveBtns.html

@@ -1,5 +1,4 @@
 
-<!-- mc-move-buttons -->
 <style>
     :host {
         --slice: 2.5;

src/UI/PausePage.html

@@ -1,5 +1,4 @@
 
-<!-- mcpage-pause (old: stop_game_page) -->
 <style>
     :host {
         position: absolute;

src/UI/PlayPage.html

@@ -1,5 +1,4 @@
 
-<!-- mcpage-play (old: play_game_page) -->
 <style>
     #mainCanvas {
         position: absolute;

src/UI/SettingPage.html

@@ -1,5 +1,4 @@
 
-<!-- mcpage-setting (old: options_page) -->
 <style>
     :host {
         text-align: center;

src/UI/WelcomePage.html

@@ -1,5 +1,4 @@
 
-<!-- mcpage-welcome (old: start_game_page) -->
 <style>
     canvas {
         position: absolute;