Rollup merge of #74351 - lzutao:remove-rustc-internal-compiler-warns, r=Mark-Simulacrum

Do not render unstable items for rustc doc

See the zulip conversion: https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/rustc.20doc.3A.20.22internal.20compiler.20API.22.20warns.20are.20everywhere!/near/203850782

Before:
![image](https://user-images.githubusercontent.com/15225902/87501971-9cff8780-c68a-11ea-93b4-ea53ce18a77b.png)
After:
![image](https://user-images.githubusercontent.com/15225902/87501985-a7218600-c68a-11ea-81c0-a6b5b120832c.png)

Nothing changes in unstable items of std:
Before:
![image](https://user-images.githubusercontent.com/15225902/87502004-b7d1fc00-c68a-11ea-9224-a27a1d2a81d6.png)
After:
![image](https://user-images.githubusercontent.com/15225902/87502018-c0c2cd80-c68a-11ea-9773-4c63158025cb.png)

Closes  #54682

3 files changed, 0 insertions, 16 deletions

diff --git a/src/librustdoc/html/static/themes/ayu.css b/src/librustdoc/html/static/themes/ayu.css
index b436997da58..382c0f417ae 100644
--- a/src/librustdoc/html/static/themes/ayu.css
+++ b/src/librustdoc/html/static/themes/ayu.css
@@ -216,10 +216,6 @@ a {
 	color: #39AFD7;
 }
 
-.stab.internal a {
-	color: #304FFE;
-}
-
 .collapse-toggle {
 	color: #999;
 }
@@ -254,7 +250,6 @@ a {
 }
 
 .stab.unstable,
-.stab.internal,
 .stab.deprecated,
 .stab.portability {
     color: #c5c5c5;
@@ -462,7 +457,6 @@ pre.rust .doccomment {}
 .content .highlighted.type {}
 pre.rust .kw-2,pre.rust .prelude-ty {}
 .content span.trait,.content a.trait,.block a.current.trait {}
-.stab.internal {}
 
 @media (max-width: 700px) {
 	.sidebar-menu {
diff --git a/src/librustdoc/html/static/themes/dark.css b/src/librustdoc/html/static/themes/dark.css
index f4ca67f8540..dc15220aa06 100644
--- a/src/librustdoc/html/static/themes/dark.css
+++ b/src/librustdoc/html/static/themes/dark.css
@@ -172,10 +172,6 @@ a {
 	color: #D2991D;
 }
 
-.stab.internal a {
-	color: #304FFE;
-}
-
 a.test-arrow {
 	color: #dedede;
 }
@@ -214,7 +210,6 @@ a.test-arrow {
 }
 
 .stab.unstable { background: #FFF5D6; border-color: #FFC600; color: #2f2f2f; }
-.stab.internal { background: #FFB9B3; border-color: #B71C1C; color: #2f2f2f; }
 .stab.deprecated { background: #F3DFFF; border-color: #7F0087; color: #2f2f2f; }
 .stab.portability { background: #C4ECFF; border-color: #7BA5DB; color: #2f2f2f; }
 
diff --git a/src/librustdoc/html/static/themes/light.css b/src/librustdoc/html/static/themes/light.css
index b5a0ba4775c..64d59ca411a 100644
--- a/src/librustdoc/html/static/themes/light.css
+++ b/src/librustdoc/html/static/themes/light.css
@@ -173,10 +173,6 @@ a {
 	color: #3873AD;
 }
 
-.stab.internal a {
-	color: #304FFE;
-}
-
 a.test-arrow {
 	color: #f5f5f5;
 }
@@ -215,7 +211,6 @@ a.test-arrow {
 }
 
 .stab.unstable { background: #FFF5D6; border-color: #FFC600; }
-.stab.internal { background: #FFB9B3; border-color: #B71C1C; }
 .stab.deprecated { background: #F3DFFF; border-color: #7F0087; }
 .stab.portability { background: #C4ECFF; border-color: #7BA5DB; }