Revert #745, always default to bolder for strong tags

Author: adamwathan

__tests__/fixtures/tailwind-output-important.css

@@ -529,16 +529,6 @@ textarea {
   color: inherit;
 }
 
-/**
- * Use the configured 'bold' weight for `strong` elements
- * by default, falling back to 'bolder' (as per normalize.css)
- * if there is no configured 'bold' weight.
- */
-
-strong {
-  font-weight: 700;
-}
-
 /**
  * Use the configured 'mono' font family for elements that
  * are expected to be rendered with a monospace font, falling

__tests__/fixtures/tailwind-output.css

@@ -529,16 +529,6 @@ textarea {
   color: inherit;
 }
 
-/**
- * Use the configured 'bold' weight for `strong` elements
- * by default, falling back to 'bolder' (as per normalize.css)
- * if there is no configured 'bold' weight.
- */
-
-strong {
-  font-weight: 700;
-}
-
 /**
  * Use the configured 'mono' font family for elements that
  * are expected to be rendered with a monospace font, falling

src/plugins/css/preflight.css

@@ -175,16 +175,6 @@ textarea {
   color: inherit;
 }
 
-/**
- * Use the configured 'bold' weight for `strong` elements
- * by default, falling back to 'bolder' (as per normalize.css)
- * if there is no configured 'bold' weight.
- */
-
-strong {
-  font-weight: theme('fontWeight.bold', bolder);
-}
-
 /**
  * Use the configured 'mono' font family for elements that
  * are expected to be rendered with a monospace font, falling