chore: sync-up catalog

 - kata/alternate-case (7-kyu => retired)
 - kata/vowel-remover (8-kyu => retired)
 - kata/build-alien-virus-estimator (beta => retired)
 - kata/horse-racing (beta => 6-kyu)
 - kata/merging-phone-numbers (beta => retired)
 - kata/the-circle-class (beta => retired)

Author: ParanoidUser

kata/beta/horse-racing/README.md kata/6-kyu/horse-racing/README.mdkata/beta/horse-racing/README.md renamed to kata/6-kyu/horse-racing/README.md

@@ -181,6 +181,7 @@
 - [Hex class](hex-class "5483366098aa442def0009af")
 - [Hidden "Cubic" numbers](hidden-cubic-numbers "55031bba8cba40ada90011c4")
 - [Highest Scoring Word](highest-scoring-word "57eb8fcdf670e99d9b000272")
+- [Horse Racing](horse-racing "5d8de9fdeeae51002600dfa4")
 - [How Many Numbers?](how-many-numbers "55d8aa568dec9fb9e200004a")
 - [How many pages in a book?](how-many-pages-in-a-book "622de76d28bf330057cd6af8")
 - [How Much?](how-much "55b4d87a3766d9873a0000d4")

…/beta/horse-racing/main/Dinglemouse.java …6-kyu/horse-racing/main/Dinglemouse.javakata/beta/horse-racing/main/Dinglemouse.java renamed to kata/6-kyu/horse-racing/main/Dinglemouse.java kata/beta/horse-racing/main/Dinglemouse.java renamed to kata/6-kyu/horse-racing/main/Dinglemouse.java

@@ -24,7 +24,6 @@
 - [Alphabetical Addition](alphabetical-addition "5d50e3914861a500121e1958")
 - [Alphabetical Sequence](alphabetical-sequence "5bd00c99dbc73908bb00057a")
 - [Alternate capitalization](alternate-capitalization "59cfc000aeb2844d16000075")
-- [Alternate case](alternate-case "57a62154cf1fa5b25200031e")
 - [Alternate Square Sum](alternate-square-sum "559d7951ce5e0da654000073")
 - [An English Twist on a Japanese Classic](an-english-twist-on-a-japanese-classic "5b04be641839f1a0ab000151")
 - [Anagram Detection](anagram-detection "529eef7a9194e0cbc1000255")
@@ -376,7 +375,7 @@
 - [Overflowing with joy](overflowing-with-joy "55186c0f4149dd08a7000006")
 - [Page replacement algorithms: FIFO](page-replacement-algorithms-fifo "62d34faad32b8c002a17d6d9")
 - [Palindrome chain length](palindrome-chain-length "525f039017c7cd0e1a000a26")
-- [Pandemia 🌡️](pandemia "5e2596a9ad937f002e510435")
+- [Pandemia 🌡️](pandemia "# [Pandemia 🌡5e2596a9ad937f002e510435")
 - [Parallel resistors](parallel-resistors "5723b111101f5f905f0000a5")
 - [Partial Word Searching](partial-word-searching "54b81566cd7f51408300022d")
 - [Parts of a list](parts-of-a-list "56f3a1e899b386da78000732")

…beta/horse-racing/test/ExampleTests.java …-kyu/horse-racing/test/ExampleTests.javakata/beta/horse-racing/test/ExampleTests.java renamed to kata/6-kyu/horse-racing/test/ExampleTests.java kata/beta/horse-racing/test/ExampleTests.java renamed to kata/6-kyu/horse-racing/test/ExampleTests.java

@@ -215,7 +215,6 @@
 - [Unfinished Loop - Bug Fixing #1](unfinished-loop-bug-fixing-number-1 "55c28f7304e3eaebef0000da")
 - [Up and down, the string grows](up-and-down-the-string-grows "644b17b56ed5527b09057987")
 - [Volume of a Cuboid](volume-of-a-cuboid "58261acb22be6e2ed800003a")
-- [Vowel remover](vowel-remover "5547929140907378f9000039")
 - [Weird Java Array](weird-java-array "6607fc50c6494c000f1a08fc")
 - [Welcome to the City](welcome-to-the-city "5302d846be2a9189af0001e4")
 - [Welcome!](welcome "577ff15ad648a14b780000e7")

kata/6-kyu/index.md

@@ -4,7 +4,6 @@
 - [Basic Arabic-To-Roman Numerals (1 to 999)](basic-arabic-to-roman-numerals-1-to-999 "5580d8dc8e4ee9ffcb000050")
 - [Beginner friendly: remove the letter o](beginner-friendly-remove-the-letter-o "58d3dd53b0fe8c9ac10000b3")
 - [Brackets Checker](brackets-checker "563208b9dde23f21cb00007c")
-- [Build Alien Virus Estimator](build-alien-virus-estimator "675851e0ebd55559d1082d24")
 - [CaMeLcAsInG](camelcasing "54c15f6e6fd290a542000135")
 - [Change for pizza](change-for-pizza "55e56e5b2f71cee88f00004f")
 - [Check the tire pressure](check-the-tire-pressure "56e1bae4f693fe1f8e000cd8")
@@ -19,12 +18,10 @@
 - [Find the closest point(s)...](find-the-closest-point-s-dot-dot-dot "674c90a098d0a87990c52e4f")
 - [Flip it](flip-it "56576f15a00ccb1c8f000088")
 - [Formatting decimal places #2](formatting-decimal-places-number-2 "56438bf8d8613e9082000027")
-- [Horse Racing](horse-racing "5d8de9fdeeae51002600dfa4")
 - [Integer to Binary!](integer-to-binary "59781c959b82f6ee4f0000c0")
 - [Letter to ASCII](letter-to-ascii "58dc15eed2ba027579000175")
 - [Lost number of arithmetic progression](lost-number-of-arithmetic-progression "6001bd346aad3700267576bc")
 - [Max Consecutive Sum](max-consecutive-sum "6033fe27779179000a28cb57")
-- [Merging Phone Numbers](merging-phone-numbers "59565018bf41d39dc5000043")
 - [only UNChecked Exceptions](only-unchecked-exceptions "63cb9cea93b0b41e12bb0845")
 - [Palindrome checker](palindrome-checker "549ae731a051e877fc000a86")
 - [Palindrome-Generator](palindrome-generator "561cee035bf6ca9560000020")
@@ -44,7 +41,6 @@
 - [Sum of list values](sum-of-list-values "57a0515f53ba33ac5e000245")
 - [Sum of values from 1 to n inclusive { nΣn=1 }](sum-of-values-from-1-to-n-inclusive-{-nsn-equals-1-} "578a55517c77f535a8000064")
 - [Tetris - rotate the block](tetris-rotate-the-block "594ff4005ceb2be738000018")
-- [The Circle Class](the-circle-class "6787fe7f9c97c27a6d055d9a")
 - [The Lamp](the-lamp "56a2e3419f9e920186000004")
 - [The most asked question on CodeWars](the-most-asked-question-on-codewars "5935ecef7705f9614500002d")
 - [Time Conversion](time-conversion "5804d54135763659cc000146")