remove recast (not used)

yarn.lock

@@ -108,10 +108,6 @@ ast-types@0.8.18:
   version "0.8.18"
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.8.18.tgz#c8b98574898e8914e9d8de74b947564a9fe929af"
 
-ast-types@0.9.2:
-  version "0.9.2"
-  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.9.2.tgz#2cc19979d15c655108bf565323b8e7ee38751f6b"
-
 "ast-types@git+https://github.com/jlongster/ast-types.git":
   version "0.9.3"
   resolved "git+https://github.com/jlongster/ast-types.git#4b373d7e710105b07b22a12389ef2d8e1bcf2412"
@@ -808,10 +804,6 @@ esprima@~3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.0.0.tgz#53cf247acda77313e551c3aa2e73342d3fb4f7d9"
 
-esprima@~3.1.0:
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
-
 estraverse@^1.9.1:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-1.9.3.tgz#af67f2dc922582415950926091a4005d29c9bb44"
@@ -1941,7 +1933,7 @@ pretty-format@^18.1.0:
   dependencies:
     ansi-styles "^2.2.1"
 
-private@^0.1.6, private@~0.1.5:
+private@^0.1.6:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.6.tgz#55c6a976d0f9bafb9924851350fe47b9b5fbb7c1"
 
@@ -1997,15 +1989,6 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-recast@^0.11.18:
-  version "0.11.18"
-  resolved "https://registry.yarnpkg.com/recast/-/recast-0.11.18.tgz#07af6257ca769868815209401d4d60eef1b5b947"
-  dependencies:
-    ast-types "0.9.2"
-    esprima "~3.1.0"
-    private "~0.1.5"
-    source-map "~0.5.0"
-
 redeyed@~1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/redeyed/-/redeyed-1.0.1.tgz#e96c193b40c0816b00aec842698e61185e55498a"
@@ -2196,7 +2179,7 @@ source-map@^0.4.4:
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.0, source-map@~0.5.1:
+source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1:
   version "0.5.6"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"