Update , remove no-longer-needed superscript filter

Gemfile.lock

@@ -10,17 +10,17 @@ GEM
     addressable (2.4.0)
     bibtex-ruby (4.3.0)
       latex-decode (~> 0.0)
-    citeproc (1.0.2)
+    citeproc (1.0.3)
       namae (~> 0.8)
-    citeproc-ruby (1.1.0)
+    citeproc-ruby (1.1.2)
       citeproc (>= 1.0.2, < 2.0)
       csl (~> 1.4)
     coderay (1.1.1)
     colorator (0.1)
     colored (1.2)
-    csl (1.4.3)
+    csl (1.4.4)
       namae (~> 0.7)
-    csl-styles (1.0.1.6)
+    csl-styles (1.0.1.7)
       csl (~> 1.0)
     ethon (0.8.1)
       ffi (>= 1.3.0)
@@ -46,7 +46,7 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-sass-converter (1.4.0)
       sass (~> 3.4)
-    jekyll-scholar (5.7.2)
+    jekyll-scholar (5.8.0)
       bibtex-ruby (~> 4.0, >= 4.0.13)
       citeproc-ruby (~> 1.0)
       csl-styles (~> 1.0)
@@ -58,7 +58,7 @@ GEM
     latex-decode (0.2.2)
       unicode (~> 0.4)
     liquid (3.0.6)
-    listen (3.0.6)
+    listen (3.1.1)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9.7)
     mercenary (0.3.6)

_plugins/scholar_superscript_filter.rb

-module Jekyll
-  class Scholar
-    class Superscript < BibTeX::Filter
-      def apply(value)
-        value.to_s.gsub(/\\textsuperscript\{([^}]+)\}/) {
-          "<sup>#{$1}</sup>"
-        }
-      end
-    end
-  end
-end