Lock pool to specific commit and get rid of redis tests

Lock pool version to 0.2.1

Put quotes around strings to make style more consistent
Lock pool to specific version and delete redis tests

frameworks/Crystal/kemal/benchmark_config.json

@@ -2,29 +2,6 @@
   "framework": "kemal",
   "tests": [{
     "default": {
-      "setup_file": "setup-redis",
-      "json_url": "/json",
-      "db_url": "/db",
-      "query_url": "/queries?queries=",
-      "fortune_url": "/fortunes",
-      "update_url": "/updates?queries=",
-      "plaintext_url": "/plaintext",
-      "port": 3000,
-      "approach": "Realistic",
-      "classification": "Fullstack",
-      "database": "Redis",
-      "framework": "kemal",
-      "language": "Crystal",
-      "orm": "micro",
-      "platform": "Crystal",
-      "webserver": "None",
-      "os": "Linux",
-      "database_os": "Linux",
-      "display_name": "Kemal",
-      "notes": "",
-      "versus": "ruby"
-    },
-    "postgres": {
       "setup_file": "setup-postgres",
       "json_url": "/json",
       "db_url": "/db",

frameworks/Crystal/kemal/shard.yml

@@ -3,17 +3,17 @@ version: "0.0.1"
 
 dependencies:
   pg:
-    github: will/crystal-pg
-    version: 0.5.0
+    github: "will/crystal-pg"
+    version: "0.5.0"
   pool:
-    github: ysbaddaden/pool
-    branch: master
+    github: "ysbaddaden/pool"
+    version: "0.2.1"
   kemal:
     github: "sdogruyol/kemal"
-    version: 0.10.0
+    version: "0.10.0"
   redis:
     github: "stefanwille/crystal-redis"
     version: "~> 1.3.1"
   html_builder:
-    github: crystal-lang/html_builder
-license: MIT
+    github: "crystal-lang/html_builder"
+license: "MIT"