Remove test_per_src

Remove test_per_src, it never worked well and is incompatible
with all of the test infrastructure.  Uses in the platform have
been removed, generally by replacing them with individual cc_test
modules.

Test: builds
Flag: TEST_ONLY
Change-Id: I257c035da35ca8358ae9423b46453878f54efeb1
diff --git a/apex/apex.go b/apex/apex.go
index e6815bc..09b086d 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2118,20 +2118,10 @@
 			}
 		case testTag:
 			if ccTest, ok := child.(*cc.Module); ok {
-				if ccTest.IsTestPerSrcAllTestsVariation() {
-					// Multiple-output test module (where `test_per_src: true`).
-					//
-					// `ccTest` is the "" ("all tests") variation of a `test_per_src` module.
-					// We do not add this variation to `filesInfo`, as it has no output;
-					// however, we do add the other variations of this module as indirect
-					// dependencies (see below).
-				} else {
-					// Single-output test module (where `test_per_src: false`).
-					af := apexFileForExecutable(ctx, ccTest)
-					af.class = nativeTest
-					vctx.filesInfo = append(vctx.filesInfo, af)
-					addAconfigFiles(vctx, ctx, child)
-				}
+				af := apexFileForExecutable(ctx, ccTest)
+				af.class = nativeTest
+				vctx.filesInfo = append(vctx.filesInfo, af)
+				addAconfigFiles(vctx, ctx, child)
 				return true // track transitive dependencies
 			} else {
 				ctx.PropertyErrorf("tests", "%q is not a cc module", depName)
@@ -2220,19 +2210,6 @@
 			addAconfigFiles(vctx, ctx, child)
 			return true // track transitive dependencies
 		}
-	} else if cc.IsTestPerSrcDepTag(depTag) {
-		if ch, ok := child.(*cc.Module); ok {
-			af := apexFileForExecutable(ctx, ch)
-			// Handle modules created as `test_per_src` variations of a single test module:
-			// use the name of the generated test binary (`fileToCopy`) instead of the name
-			// of the original test module (`depName`, shared by all `test_per_src`
-			// variations of that module).
-			af.androidMkModuleName = filepath.Base(af.builtFile.String())
-			// these are not considered transitive dep
-			af.transitiveDep = false
-			vctx.filesInfo = append(vctx.filesInfo, af)
-			return true // track transitive dependencies
-		}
 	} else if cc.IsHeaderDepTag(depTag) {
 		// nothing
 	} else if java.IsJniDepTag(depTag) {