Remove barely used snippets

UltiSnips/markdown.snippets

@@ -35,13 +35,6 @@ $1
 $0
 endsnippet
 
-snippet cobol "Cobol Code"
-\`\`\`cobol
-$1
-\`\`\`
-$0
-endsnippet
-
 snippet bash "bash Code"
 \`\`\`bash
 $1
@@ -59,41 +52,3 @@ endsnippet
 snippet ,m "Math equation" A
 \$$1\$ $0
 endsnippet
-
-snippet entry "Add new entry" bA
------------------------------------------------------------
-## $1 ##
-### Date:   ${2:`date`} ###
-### Author: ${3:`whoami`} ###
-### Host:   `hostname` ###
------------------------------------------------------------
-Tags: $4
-
-$5
-
------------------------------------------------------------
-$0
-endsnippet
-
-snippet info "The Markdown Information panel" b
----
-
-${1:Info}
-
-Tags: $2
-$0
-endsnippet
-
-snippet cite "Cite from a paper" b
----
-
-> ${1:Citation}`!p t[1].replace('\n', '\n> ')`
-
-Tags: $2
-$0
-endsnippet
-
-snippet immernoch "ARGH, lern schreiben!" A
-noch immer
-endsnippet
-