Revert "misc/cgo/testcshared: temporarily skip testing on android"

This reverts commit a6ffab6b.

Reason for revert: with CL 57290 the tests run on Android again.

Change-Id: Ifeb29762a4cd0178463acfeeb3696884d99d2993
Reviewed-on: https://go-review.googlesource.com/57310Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

misc/cgo/testcshared/cshared_test.go

@@ -259,9 +259,6 @@ func cleanupAndroid(t *testing.T) {
 
 // test0: exported symbols in shared lib are accessible.
 func TestExportedSymbols(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	cmd := "testp"
 	bin := cmdToRun(cmd)
 
@@ -284,9 +281,6 @@ func TestExportedSymbols(t *testing.T) {
 
 // test1: shared library can be dynamically loaded and exported symbols are accessible.
 func TestExportedSymbolsWithDynamicLoad(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	cmd := "testp"
 	bin := cmdToRun(cmd)
 
@@ -309,9 +303,6 @@ func TestExportedSymbolsWithDynamicLoad(t *testing.T) {
 
 // test2: tests libgo2 which does not export any functions.
 func TestUnexportedSymbols(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	cmd := "testp2"
 	libname := "libgo2." + libSuffix
 	bin := cmdToRun(cmd)
@@ -351,9 +342,6 @@ func TestUnexportedSymbols(t *testing.T) {
 
 // test3: tests main.main is exported on android.
 func TestMainExportedOnAndroid(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	if GOOS != "android" {
 		return
 	}
@@ -380,9 +368,6 @@ func TestMainExportedOnAndroid(t *testing.T) {
 
 // test4: test signal handlers
 func TestSignalHandlers(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	cmd := "testp4"
 	libname := "libgo4." + libSuffix
 	bin := cmdToRun(cmd)
@@ -416,9 +401,6 @@ func TestSignalHandlers(t *testing.T) {
 
 // test5: test signal handlers with os/signal.Notify
 func TestSignalHandlersWithNotify(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	cmd := "testp5"
 	libname := "libgo5." + libSuffix
 	bin := cmdToRun(cmd)
@@ -451,9 +433,6 @@ func TestSignalHandlersWithNotify(t *testing.T) {
 }
 
 func TestPIE(t *testing.T) {
-	if GOOS == "android" {
-		t.Skip("Skipping failing test, see issue 21513 for details")
-	}
 	switch GOOS {
 	case "linux", "android":
 		break