Remove unused dependency on httpcomponents:httpmime

The only consumer of httpmime was Apache Solr, which was removed
in change Ic62ae3103 more than 3 years ago.

Change-Id: I6204dc74cc99a878ac4cac7c777a235544f9f80e

WORKSPACE

@@ -653,12 +653,6 @@ maven_jar(
     sha1 = "f5aa318bda4c6c8d688c9d00b90681dcd82ce636",
 )
 
-maven_jar(
-    name = "httpmime",
-    artifact = "org.apache.httpcomponents:httpmime:" + HTTPCOMP_VERS,
-    sha1 = "2f8757f5ac5e38f46c794e5229d1f3c522e9b1df",
-)
-
 # elasticsearch-rest-client explicitly depends on this version
 maven_jar(
     name = "httpasyncclient",

lib/httpcomponents/BUILD

@@ -27,13 +27,6 @@ java_library(
     exports = ["@httpcore//jar"],
 )
 
-java_library(
-    name = "httpmime",
-    data = ["//lib:LICENSE-Apache2.0"],
-    visibility = ["//visibility:public"],
-    exports = ["@httpmime//jar"],
-)
-
 java_library(
     name = "httpasyncclient",
     data = ["//lib:LICENSE-Apache2.0"],